Question

If f(x) = 2x + 3 and g(x) = 4x - 1, find f(4).
A. 11
B. 15
C. 5
D. 17

Answer 1

A. 11

Explanation:

Substitute the value 4 for the variable x in f(x).

`f(4)=2(4)+3\\f(4)=8+3\\f(4)=11`

Answer 2

A. 11

Explanation:

f(x) = 2x + 3 when x = 4

~Substitute

2(4) + 3

~Simplify

8 + 3

11

Best of Luck!