Question

Find x if f(x) = 2x + 7 and f(x) = -1.
a.5 b.-3 c.-4​

Answer 1

Answer c. -4

Explanation:

Equations

Given:

f(x) = 2x + 7

We need to find the value of x such that:

f(x) = -1

Equating:

2x + 7 = -1

Subtracting 7:

2x = -1 - 7

Operating:

2x = -8

Dividing by 2:

x = -8 / 2 = -4

x = -4

Answer c. -4