Question

Given f(x) = 5x + 3, find f(-2).

Answer 1

f(- 2) = - 7

Explanation:

To evaluate f(- 2) substitute x = - 2 into f(x), that is

f(- 2) = 5(- 2) + 3 = - 10 + 3 = - 7

Answer 2

In this question, you're solving the equation by plugging -2 into x.

Plug -2 into x:

f(x) = 5(-2) + 3

Solve:

f(x) = 5(-2) + 3

f(x) = -10 + 3

f(x) = -7

Answer:

f(x) = -7