Question

For f(x) = 2x + 8, find x when f(x) = -7. Type a numerical answer in the space provided. If necessary, use the / key to represent a fraction bar. Do not include spaces in your answer. a0

Answer 1

Answer: Answer was found at TigerAlgebra.com

Step-by-step explanation:

x = -4

Answer 2

Answer:

The value of x is $-\frac{15}{2}$.

Step-by-step explanation:

The given function is

$f(x)=2x+8$

We need to find the value of x when f(x)=-7.

Substitute f(x)=-7 in the given function.

$-7=2x+8$

Subtract 8 from both sides.

$-7-8=2x+8-8$

$-15=2x$

Divide both sides by 2.

$-\frac{15}{2}=\frac{2x}{2}$

$-\frac{15}{2}=x$

Therefore, the value of x is $-\frac{15}{2}$.