Question

Which equation could best be used to determine the value

of f(3) for the function f(x) = 2x + 4?
1) f(3) = 23+ 4
2) f(3) = 2(3)+4
3) f(3) = 3(2x) + 4
4) f(3) = 3(2x + 4)

Answer 1

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

Explanation: