Question

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

Answer 1

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

Explanation:

Since X was exchanged for a+2, you have to set a+2 as x in the problem.

Answer 2

`\large\boxed{f(a+2)=3(a+7)+(4)/(a+2)}`

Explanation:

`f(x)=3(x+5)+(4)/(x)\\\\f(a+2)-\text{put x = a + 2 to the equation of f(x):}\\\\f(a+2)=3\bigg((a+2)+5\bigg)+(4)/(a+2)=3(a+2+5)+(4)/(a+2)\\\\f(a+2)=3(a+7)+(4)/(a+2)`