Question

If f(x)=3(x+5) +4/x, what is f(a+2)​

Answer 1

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

Explanation:

To determinef(a+2) you need to substitute a+2 for each occurrence of x in the given function. See below for full explanation.

Explanation:

If

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

Then

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

Simplifying gives:

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