Question

If f(x) = 3(x+5) + 4/x, what is f(a + 2)?

A. 3(a + 2) + 4/a +2
B. 3(f(a)+5)+ 4/f(a)+2
C. 3(a + 7) + 4/a+2

Answer 1

C. 3(a+7) + 4/a+2

Explanation:

f(x) = 3(x+5) + 4/x

f(a+2) = 3(a+2+5) + 4 /(a+2)

= 3(a+7) + 4/a+2