Question

Find the value of f(5) if

f(x) = {2x - 7, x51
13x + 4, x > 0

A) -5
B) 7
C) 3
D) 19

Answer 1

According to the given composite figure, when x = 5, we have to evaluate the expression 3x+4, so

`f(5)=3(5)+4=15+4=19`

Hence, the answer is D.