A biologist took a count of the number of fish in a particular lake, and recounted the lake’s population of fish on each of the next six weeks.

Find a quadratic function that models the data as a function of x, the number of weeks. Use the model to estimate the number of fish at the lake on week 8.


P(x) = 13x^2 – 10x + 350; 917 fish
P(x) = 13x^2 – 10x + 350; 1,102 fish
P(x) = 18x^2 + 10x + 300; 1,252 fish
P(x) = 18x^2 + 10x + 300; 1,532 fish

Answers

Answer 1
The two equations for which the given number of fist is satisfied when x = 8 is plugged in are:
P(x) = 13x^2 – 10x + 350
and
P(x) = 18x^2 + 10x + 300

Now, we can only decide which is correct if we have additional information, specifically if we know the number of fish initially. If it is 350, option B is correct and if it is 300 then option D is correct.
Answer 2

Answer:

P(x) = 13x2 – 10x + 350; 1,102 fish

Step-by-step explanation:

Plug in week 8 for x.

[tex]P(x) = 13 * (8)^{2} - 10(8) - 350 =[/tex]

[tex]P(x) = 13 * 64 - 80 + 350 =\\\\ P(x) = 832 - 80 + 350 = 1102[/tex]


Related Questions

what is 14 9/100 as a decimal

Answers

.09 or 0.09

The place after the decimal is the tenths place, the next place is the hundredths place
.9 = 9/10
.09 = 9/100
.009 = 9/1000

The ratio of two numbers is 1 to 4, and the sum of the numbers is 45. What is the smaller number?


10


9


8


7

9 i think

Answers

yes it is nine because if you take nie and divide it it should be nine

What is 0.853 to the nearest tenth?

Answers

The answer is 0.9. the 5 rounds the 8 to 9

which is bigger 40% of 210 or 1/4 of 320

Answers

Final answer:

To find out which is bigger, we calculate 40% of 210 and 1/4 of 320. 40% of 210 is greater than 1/4 of 320.

Explanation:

To find out which is bigger, 40% of 210 or 1/4 of 320, we need to calculate both values.

First, 40% of 210 can be calculated by multiplying 210 by 0.4. This gives us 84.

Next, 1/4 of 320 can be calculated by dividing 320 by 4. This gives us 80.

Therefore, 40% of 210 is greater than 1/4 of 320.

What is the answer to the riddle 20 30 x 0 1 the real answer..?

Answers

PEMDAS- [Parenthese, Exponents, Multiplication, Division, Addition, Subtraction.]

Since there is no Parentheses, nor Exponents, you have to go straight to multiplication. Then to addition

30+30×0+1

30×0=0

30+0+1=31.

I hope my answer has come to your help. God bless and have a nice day ahead!



In a game of blackjack, a 2-card hand consisting of an ace and a face card or a 10 is called a blackjack. (Round your answers to four decimal places.)
(a) If a player is dealt 2 cards from a standard deck of 52 well-shuffled cards, what is the probability that the player will receive a blackjack?
(b) If a player is dealt 2 cards from 2 well shuffled standard decks, what is the probability that the player will receive a blackjack?

Answers

Final answer:

To calculate the probability of getting a blackjack from a single well-shuffled deck, you must consider the probability of drawing an Ace and then a 10-value card or vice versa, and add those probabilities together. The same process applies to two decks with adjusted numbers. You will then round the final probabilities to four decimal places.

Explanation:

To answer the question of the probability of getting a blackjack in a single deck, consider that there are 4 aces in a deck and 16 cards that are either a face card or a 10 (each suit has 4 such cards - Jacks, Queens, Kings, and 10s). When one card is drawn, the remaining cards are one fewer, so we need to adjust our probability for the second card.

Calculate the probability of drawing an Ace first and then a card with a value of ten: P(Ace first, then 10) = (4/52) × (16/51).Calculate the probability of drawing a 10-value card first and then an Ace: P(10 first, then Ace) = (16/52) × (4/51).Add the two probabilities together for the final answer.

For the probability of a blackjack from two decks, follow the same steps, but adjust the numbers for a 104-card deck.

P(Ace first, then 10) = (8/104) × (32/103).P(10 first, then Ace) = (32/104) × (8/103).Add the two probabilities together for the final answer.

After doing the calculations, we round the probabilities to four decimal places as instructed.

What is closer to 1/3 0.3 0.33 or 0.333

Answers

0.333 because 1/3 is 0.3 infinitely. 

Find two consecutive whole numbers that /76 lies between.

Answers

76 lies between ,<  35 and 41 >

The hypotenuse of a 45°-45°-90° triangle measures 128 cm.What is the length of one leg of the triangle?

Answers

64sqrt2 is the exact answer. 90.51 to the hundredth or 91 to the nearest whole. The formula is hyp = sqrt2 times leg

Answer:

Since, a 45°-45°-90° triangle is a special type of isosceles right triangle, where the two legs are congruent to one another and the non-right angles are both equal to 45 degrees.

In 45°−45°−90° triangle

Sides are in the proportion [tex]1:1:\sqrt{2}[/tex]

then,

the measures of the sides are [tex]x , x ,\sqrt{2}x[/tex]

The length of hypotenuse= [tex]\sqrt{2}[/tex] times the length of the leg.   ....[1]

Given: length of hypotenuse = 128 cm.

then,

from [1] we have;

128 = [tex]\sqrt{2}\cdot x[/tex]

or

[tex]x=\frac{128}{\sqrt{2}}[/tex] = [tex]\frac{128}{\sqrt{2} } \times  \frac{\sqrt{2}}{\sqrt{2}}  = \frac{128\sqrt{2}}{\sqrt{2}\cdot \sqrt{2}}[/tex]

Simplify:

[tex]x =\frac{128 \cdot \sqrt{2}}{2} =64\sqrt{2}[/tex] cm.

Therefore, the length of one leg of the triangle is; [tex]64\sqrt{2}[/tex] cm.


A comic book costs $3.99, including tax. It is marked up 45%. What is the final price of the comic book after it is marked up? $1.80 $4.44 $5.79 $6.15

Answers

$1.80

3.99 x 0.04 = 1.79
and you get 1.80 when you round it

the real answer is 5.79, the other person had had miscalculation

what are the x and y intecepts of the graph of the equation 6x - 5y=3

Answers

The y-intercept is negative 3/5. 

The x-intercept is negative 1/2

this is because i plugged in 0 for x, and got the y-intercept and plugged in 0 for y and got the x-intercept
First, make it into slope intercept form. You should get y=6/5x+3/5.
Then, to find the y intercept, look at the last number in the equation. It is always the y-intercept as long as the equation is in slope-intercept form. Y-intercept=3/5.
Next, plug in y as zero to get the x-intercept. You should get -1/2. 

y-int=(0,3/5)
x-int=(-1/2,0)

Expressions cannot _____.



be evaluated

be solved

be simplified

have variables

Answers

Expressions cannot be solved.
Although they are similar to equations, you can solve an equation, but you cannot solve an expression. You can evaluate it, simplify it, and it can have many variables, however, an expression just exists, it is not a problem that has to be solved.

Answer:

B. be solved

Step-by-step explanation:

A bag of chips contains 145 calories per serving. Each bag of chips contain 3 servings.

How many calories are in 2 bags of chips?

A.145 calories

B.150 calories

C.435 calories

D.870 calories

Answers

it says that 1 bag contains 3 servings of 145 calories. you need to multiply 145 times 3, which equals to 435. then since it two bags containing 435 calories in 3 servings you add the 435 + 435 which equal 870

Answer:

870 calories Option D.

Step-by-step explanation:

A bag of chips contains calories per serving = 145

If each bag contains servings = 3

so total calories per bag = 3 × 145

                                         = 435

Now we have to calculate the total servings in 2 bags.

Number of calories in 1 bag = 435

Therefore, number of calories in 2 bags = 435 × 2

                                                                   = 870 calories

Option D. 870 calories is the answer.

The polynomial given below has _____ root(s).

3x2 - 8x + 4

A. two positive
B. two negative
C. two complex
D. one positive and one negative

Answers

3x²-8x+4=0
(3x-2) (x-2)=0
x=2/3 ,  x = 2
Hence, the polynomial has two positive roots.
Option A is the correct choice.

The population of foxville is about 12 times 10 to the power of 3. which is another way to write this number

Answers

12x10^3

This can also mean 12x1000

which is 12 000

Answer:

The population of foxville is 12000.

Step-by-step explanation:

It is given that the population of foxville is about 12 times 10 to the power of 3.

Population of foxville = [tex]12\times 10^3[/tex]

[tex]12\times 10^3[/tex] is a scientific notation of a number.

We need to write this number in another way.

[tex]12\times 10^3=12\times 1000[/tex]

[tex]12\times 10^3=12000[/tex]

Therefore, the population of foxville is 12000.

Use the stem and leaf plot shown to answer the following question.

Answers

16, 18, 23, 25, 26, 34, 37, 37, 40, 41, 46

37 is the upper quartile value

PLEASE HELP PLEASE PLEASE

Answers

kayley3 im so sorry but that pic does not show on my computer could you sand a other one 

The product of twenty-one negative integers is negative.
True

False

Answers

Answer: TRUE:
_____________________
It is TRUE that the product of 21 (twenty-one) negative integer is a negative number; because you are multiplying an ODD NUMBER of NEGATIVE INTEGERS.
________________________
The correct answer for the given statement above would be TRUE. It is true that the product of twenty-one negative integers is negative. Analyze this. If you multiply 2 negative integers, it gives you a positive integer. So, every 2 negative integers you multiply, the product will always be positive, and since the given is 21 negative integers, this would also give you a negative result. Hope this answer helps.

The average income, I, in dollars, of a lawyer with an age of x years is modeled with the following function:

What is the youngest age for which the average income of a lawyer is $450,000?

Round to the nearest year.

Answers

The answer is 37 years old.

I = -425x² + 45500x -650000
I = 450000

-425x² + 45500x -650000 = 450000
-425x² + 45500x - 650000 - 450000 = 0
-425x² + 45500x - 1100000 = 0

Divide all factors by 25:
- 17x² + 1820x - 44000 = 0

This is quadratic equation (ax² + bx + c = 0)
[tex]x_{1,2} = \frac{-b+/- \sqrt{ b^{2}-4ac } }{2a} = \frac{-1820+/- \sqrt{ 1820^{2}-4*(-17)*(-44000) } }{2*(-17)} = \\ \\ = \frac{-1820+/- \sqrt{3312400-2992000 } }{-34} = \frac{-1820+/- \sqrt{320400} }{-34} =\frac{-1820+/- 566}{-34} \\ \\ x_1= \frac{-1820+ 566}{-34}= -37 \\ \\ x_2 = \frac{-1820- 566}{-34}=70[/tex]

Since, the youngest age is needed, the correct answer is x = 37
Final answer:

To find the youngest age for a lawyer to have an average income of $450,000, you solve the income function equation and round to the nearest year.

Explanation:

The youngest age for which the average income of a lawyer is $450,000 can be found by solving the given function:

I(x) = 10000 + 2000x

Given I(x) = $450,000, the equation becomes:

450,000 = 10000 + 2000x2000x = 440,000x = 220

Rounded to the nearest year, the youngest age would be 220 years old.

Let y represent the total cost of publishing a book (in dollars). Let x represent the number of copies of the book printed. Suppose that x and x are related by the equation.

What is the change in the total cost for each book printed?

What is the cost to get started (before any books are printed)?

Equation: y=1250+25x

Answers

What is the change in the total cost for each book printed?
$25
What is the cost to get started (before any books are printed)?
$1250

WILL UPVOTE!
Factor the expression.
36c^2 −121

Answers

Free yet powerful Solver Simplifier that Shows Work ... ... Step 2 : Trying to factor as a Difference of Squares : 2.1 Factoring: 36c2-121 ... Note : - AB + AB equals zero and is therefore eliminated from the expression....
the answer would be 2.1 according to this

Suppose that ln 2=a and ln3=b. Use properties of logarithms to write each logarithm in terms of a and b

ln0.5 ...?

Answers

The solution to the problem is as follows:

ln(0.5) could be written as ln(2) - ln(2) - ln(2) = a - a - a = -a 

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

State the postulate or theorem that proves that x||y.

A.converse of the consecutive interior angles theorem
B.converse of the alternate interior angles theorem
C.converse of the corresponding angles postulate
D.converse of the alternate exterior angles theorem

Answers

the answer is
C.converse of the corresponding angles postulate
Final answer:

The theorem that proves x is parallel to y is the Converse of the Alternate Interior Angles Theorem, which states that if alternate interior angles are congruent, the lines are parallel. The correct answer to the question of which postulate or theorem proves that x is parallel to y is B. Converse of the Alternate Interior Angles Theorem.

Explanation:

According to this theorem, if two lines are cut by a transversal and the alternate interior angles are congruent, then the lines are parallel. The other options, such as the converse of the corresponding angles postulate or the converse of the consecutive interior angles theorem, are related but specifically address different sets of angles formed when two lines are cut by a transversal.

In geometry, it is crucial to apply the correct postulates or theorems to prove specific properties, like parallel lines. The reliability of these mathematical proofs, like those in trigonometry or physics, comes from the logical sequence of applying these fundamental principles accurately.

Learn more about Converse of the Alternate Interior Angles Theorem here:

https://brainly.com/question/31761184

#SPJ6

Naomi draws a portion of a figure as shown. She wants to construct a line segment through R that makes the same angle with line segment QR as line segment PQ.

Answers

let B be the intersect point with circle of center R
draw a circle with center B and radius ST
and make this congruent to R. I've attached the image as well

Answer:

In FLVS it is the third option

Step-by-step explanation:

Hope this helps :)


(04.02 LC)
Triangle ABC is similar to triangle PQR, as shown below:

Two similar triangles ABC and PQR are shown. Triangle ABC has sides AB = c, BC = a, and AC = b. Triangle PQR has sides PQ = r,
Which ratio is equal to b:q? (1 point)


b:a

c:r

r:a

q:c

Answers

I hope this helps you

Answer:

The correct option is 2.

Step-by-step explanation:

It is given that triangle ABC is similar to triangle PQR.

In triangle ABC, AB=c, BC=a, and AC=b.

In triangle PQR, PQ=r, QR=p, PR=q.

The corresponding sides of similar triangles are proportional.

Since [tex]\triangle ABC\sim \triangle PQR[/tex], therefore their corresponding sides are proportional.

[tex]\frac{AB}{PQ}=\frac{BC}{QR}=\frac{AC}{PR}[/tex]

[tex]\frac{c}{r}=\frac{a}{p}=\frac{b}{q}[/tex]

It meas the ratio c:r = a:p = b:q.

Therefore the correct option is 2.

Three-fourths of a number increased by one-fifth is no less than seven-eighths.

Which equation represents this problem?

Answers

i think it is 3/4y + 1/5 ≥ 7/8

Answer:

yea, most likely it´s 3/4 y + 1/5 ≥ 7/8

Step-by-step explanation:

3 out of 4 students surveyed in a school said they will vote for nuncio for class president predict how many of the 340 students in the school would vote for nuncio

Answers

340 * 3/4 because that's what the kids agreed to do

To predict the number of votes for Nuncio for class president, multiply 3/4 (or 0.75) by the total number of students (340), resulting in a prediction that 255 students would vote for Nuncio.

To predict how many of the 340 students in the school would vote for Nuncio for class president, we need to understand the proportion that we got from the survey. Since 3 out of 4 students said they would vote for Nuncio, this is the same as 75% or 0.75 when expressed as a decimal.

We then apply this proportion to the total number of students in the school:

Convert the fraction 3/4 to a decimal: 3 ÷ 4 = 0.75.

Multiply the total number of students by the decimal: 340 students × 0.75 = 255 students.

Therefore, we predict that 255 of the 340 students would vote for Nuncio for class president.

At the halftime show, a marching band marched in formation. The lead drummer started at a point with coordinates (–2, –5) and moved 3 steps up and 1 step right.

a. Write a rule to describe the translation.
b. What were the coordinates of the drummer's final position? (3 points)

Answers

a) The answer is: (x + a, y + b)
b) The answer is: (-1, -2)
The initial coordinates are:
(x, y) = (-2, -5)

Let's find a and b.
a is a distance in x direction: a = 1
b is a distance in y direction: b = 3

The final position is:
(x + a, y + b) = (-2 + 1, -5 + 3) = (-1, -2)

Answer:

a) The answer is: (x + a, y + b)

b) The answer is: (-1, -2)

The initial coordinates are:

(x, y) = (-2, -5)

should be the answer.

Let's find a and b.

a is a distance in x direction: a = 1

b is a distance in y direction: b = 3

The final position is:

(x + a, y + b) = (-2 + 1, -5 + 3) = (-1, -2)

Step-by-step explanation:

the bryant family reuion and the jordan family reunion both include a visit to the zoo desert archers different amounts for children and adults in the following system A represents the cost of an adult ticket and C represents the cost of a child ticket. The first equation in the system represents the amount of money the Bryant family spends and the second equation represents the amount of money that the Jordan family spends

12a + 16c =176
10a + 8c =120

Which of the following statements are true?

A. the Bryants take 12 adults and 16 children to the zoo

B. There is a total of 22 children at the reuions

C.There is a total of 18 people at the Jordans reuion

D.16 represents the cost of a child ticket for the Bryant reuion

E. 10 represents the cost of an adult ticket for the Jordan family

F. The Bryant family spends $120 on tickets for the children and adults

G. Together the family spends $296


❗PLEASE HELP❗


Answers

A,C,G statement is correct...

Answer:

D. 16 represents the cost of a child ticket for the Bryant reunion.G. Together the family spends $296

Step-by-step explanation:

To find the right answer we have to solve the system of equation:

[tex]\left \{ {{12a+16c=176} \atop {10a+8c=120}} \right.[/tex]

If we multiply the second equation by -2, we could eliminate the c-variable and solve for a-variable:

[tex]\left \{ {{12a+16c=176} \atop {-20a-16c=-240}} \right.\\-8a=-64\\a=\frac{-64}{-8}=8[/tex]

Now, we replace this value in one equation to obtain the other value:

[tex]10a + 8c =120\\10(8)+8c=120\\80+8c=120\\8c=120-80\\c=\frac{40}{8}=5[/tex]

So, the solution of the system is [tex](8,5)[/tex], which means that there are 8 adults and 5 children.

Also, according to the linear expressions The Bryants spend $12 per adult and $16 per child, and a total amount of $176. The Jordan family spend $10 per adult and $8 per child, and a total amount of $120. Both families together spent $296.

Therefore, the right answers are D and G

Find the amount of simple interest earned after 2 years on $480 invested at a 7% annual interest rate?

Answers

Formula for the simple interest is:
I = P · r · t,
where:  P = $480,  r = 7% = 0.07, t = 2 years;
I = 480 · 0.07 · 2 = $67.20
Answer:
The amount of simple interest is $67.20

Using the simple interest formula, an investment of $480 at a 7% annual interest rate will earn $67.20 in simple interest after 2 years.

Finding Simple Interest on an Investment

To calculate the simple interest earned after 2 years on a $480 investment at a 7% annual interest rate, you can use the simple interest formula: Interest = Principal times Rate times Time.

The principal (P) is the initial amount of money, which in this case is $480. The rate (R) is the annual interest rate expressed as a decimal, so 7% becomes 0.07. The time (T) is the number of years the money is invested or borrowed, which is 2 years in this scenario.

Using the simple interest formula:

Interest = 480 times 0.07 times 2

Interest = 33.6 times 2

Interest = $67.20

Therefore, an investment of $480 at a 7% annual interest rate will earn $67.20 in simple interest after 2 years.

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