Question

Given the function f(x) = 3x + 1, evaluate f(a + 1).
o За + 1
За + 2
o За + 4

Answer 1

3a+4

Explanation:

f(x) = 3x + 1,

f(a+1)=

Replace x with a+1

f(a+1) = 3(a+1) +1

Distribute

=3a+3+1

=3a +4