Question

Find x if f(x) = 2x + 7 and f(x) = -1.

Answer 1

The answer is positive 5

Answer 2

Answer:

$x=-4$

Step-by-step explanation:

We are given the function:

$f(x)=2x+7$

And we want to find x when f(x) = -1.

Substitute:

$-1=2x+7$

Subtract seven from both sides:

$2x=-8$

Divide both sides by two. Hence:

$x=-4$