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3 years ago

9

The function f(x) = 10x + 15 models

1 answer:

garik1379 [7]3 years ago

5 0

Answer:

$55

Step-by-step explanation:

X represents the amount of hours that Jack shovels for and it says that he shoveled for four hours. All you have to do it plug 4 into the equation. It will be 10(4)+15. After you simplify it you will see that he gets 55 dollars for four hours of work.

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What are the solutions of the equation. 3x-1=2x

dybincka [34]

Answer:

there is only one solution

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x - 1 = 0

x = 1

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3 years ago

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Solve the inequality.<br> 5x - 7 < 8x + 8<br> The solution set is x |

timofeeve [1]

Answer:

- 5 < x

Step-by-step explanation:

To solve, we need to isolate the variable: x

5x - 7 < 8x + 8

Subtract 5x from both sides

5x - 5x -7 < 8x -5x + 8

- 7 < 3x + 8

Subtract 8 from both sides

- 7 -8 < 3x + 8 -8

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Divide both sides by 3

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3 years ago

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Subtract the rational expression 1/x^2-x-6 - x/x+2.

Aleksandr [31]

Answer:

Step-by-step explanation:

x² - x -6 = x² + 2x - 3x - 3*2

=x(x + 2) - 3(x + 2)

= (x + 2 )(x - 3)

$\frac{1}{x^{2}-x-6}+\frac{x}{x+2}=\frac{1}{(x +2 )(x - 3)}-\frac{x}{x + 2}\\$

$= \frac{1}{(x+2)(x-3)}-\frac{x(x-3)}{(x+2)(x-3)}\\\\=\frac{1-x(x-3)}{(x+2)(x-3)}\\\\=\frac{1-x^{2}+3x}{(x+2)(x-3)}\\\\$

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3 years ago

A bar graph shows that sports books received 9 votes . If the scale is 0 to 20 by twos, where should the bar end for the sports

Anna35 [415]

Check the picture below.

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3 years ago

Evaluate f(t)=-2t2+ 1 for f(-3).

podryga [215]

Answer:

7

Step-by-step explanation:

First, plug-in f(-3) into t in the function:

$f(-3)=-2(-3) +1$

Second, multiply -2 and -3 to get 6:

$f(-3)=-2(-3)+1$ ⇒ $f(-3)=6+1$

Third, add 6 and 1 to get your answer:

$f(-3)= 6+1$ ⇒ $f(-3)=7$

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3 years ago