Question

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

Answer 1

the answer is positive 5

Answer 2

`x=-4`

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`