Question

Find the value of f(7) for the function f(x) = -3x + 6

Answer choices:
A. -21
B. 27
C. -27
D. -15

Answer 1

D. -15

Explanation:

f(x)=7

f(x) = -3x + 6

Then substitute x for 7 and solve linearly.

-3(7)+6

-21+6

=-15

The answer is D