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3 years ago

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You figured out that you could make $50 each time you cleaned a pool during the summer. You did, however, need to purchase some

equipment to get started. After cleaning 3 pools, you were still down at total of 15 dollars. Write an equation in point-slope form that represents that number of pools you clean

2 answers:

Lunna [17]3 years ago

5 0

Answer:

Step-by-step explanation:

mamaluj [8]3 years ago

3 0

Answer and explanation:

Assuming x is the number of pools you have cleaned, the amount of money you can make can be represented by

a) y = 50x - 165 (After cleaning three pools, you were still down $15, this means the equipment costs 3*50 + 15 = $165)

b) The y-intercept -165 is the equipment cost

c) After cleaning 12 pools, y = 600 - 165 = 435. You have made $435.

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ArbitrLikvidat [17]

Answer:

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Step-by-step explanation:

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3 years ago

Find the average rate of change of f(x) = 4x² – 3 from 3 to 9.

Lina20 [59]

Answer:

44

Step-by-step explanation:

Given:

$f(x) = 4x^2 - 3$

Required:

Average range of change from 3 to 9

SOLUTION:

Step 1:

Find f(3) and f(9):

To find f(3), replace x with 3 in the given function

$f(3) = 4(3)^2 - 3$

$f(3) = 4(9) - 3$

$f(3) = 36 - 3$

$f(3) = 33$

To find f(9), replace x with 9 in the given function

$f(9) = 4(9)^2 - 3$

$f(9) = 4(81) - 3$

$f(9) = 324 - 3$

$f(9) = 321$

Average rate of change = $\frac{f(b) - f(a)}{b - a}$

Where,

$a = 3, f(a) = 33$

$b = 9, f(b) = 321$

Plug in the values into the formula for average rate of change.

$= \frac{321 - 33}{9 - 3}$

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3 0

3 years ago

I don’t know how to do this lol this is a test

Artemon [7]

Answer:

D) $x+y=-3$

Step-by-step explanation:

Basically, if you plug in the x and y-coordinates into an equation, both sides should work out to be equal to each other:

Since $-5+2\neq 3$ , we can eliminate choice A

Since $-5-2\neq -3$ , we can eliminate choice B

Since $-5-2\neq 3$ , we can eliminate choice C

Therefore, since $-5+2=-3$ , then D is correct. Also, $3+(-6)=-3$

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2 years ago

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Gwar [14]

Answer:

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Step-by-step explanation:

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-3x -6 > 4x +5x-35

Combine like terms

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Add 3x to each side

-3x+3x-6 > 9x+3x -35

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Add 35 to each side

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Divide each side by 12

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Kamila [148]

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3 years ago

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