Question

F(x) = 4x ; find f(-15)

Answer 1

f(-15) = -60

Explanation:

Plug in -15 for x:

f(x) = 4x; f(-15) = 4(-15)

Multiply. Note that when you multiply one negative and one positive number together, your answer will be negative.

4 * -15 = -60

-60 is your answer.

~