Question

Evaluate the function

f(x) = 1-3x

for f(-2).
a. 5
b. 7
c. 6
d. 4

Answer 1

The answer is b. 7 if you multiply -3 x -2 you get 6 + 1

Answer 2

7

Explanation:

Plug in -2 for x

f(-2) = 1 - 3(-2)

Multiply first because of PEMDAS

f(-2) = 1 - (-6)

2 negatives make a positive

f(-2) = 1 + 6

f(-2) = 7