Question

Evaluate f(x) = 2x - 7 when x = 8.

Answer 1

9

Explanation:

plug in 8 where x is so it would look like

2(8)-7 = 9

do 2 *8 first which is 16

then do 16-7 which gives you 9

Answer 2

9

Explanation:

Substitute 8 in place of x

f(x) = 2*8-7

f(x) = 9