Question

let f(x) = 8x - 7 what is f(4)

A. 25
B. 36
C.39
D. 32

Answer 1

A. 25

8x4=32
32-7=[25]

Answer 2

Replace the x by 4  and perform the calculation:_

f(4) = 8(4) - 7  = 32 - 7 - 25

Ita A