Question

HELPPPP

If f(x) = 2x + 1, what is f(x) when x = 3?
1
7
ОООО
13
19

Answer 1

ANSWER
f(x)=7

EXPLANATION
You have to substitute the 3 with x.
f(x) = 2x + 1
f(x) = 2(3) + 1
f(x) = 6 + 1
f(x) = 7