Question

If f(x)=3x+5/x, what is f9a+2)

A. 3(a+2)+8/a+2
B. 3(f(a))+5/f(a)+2
C. 3a+5/a+2

Answer 1

b

Explanation:

Answer 2

For this case we have a function of the form
`y = f (x)`, where:

`f (x) = 3x + \frac {5} {x}`

You want to find the value of the function to:

`x = a + 2`

That is to say:

`f (a + 2) = 3 (a + 2) + \frac {5} {a + 2}`

Rewriting we have:

`f (a + 2) = 3a + 6 + \frac {5} {a + 2}`

ANswer:

`f (a + 2) = 3 (a + 2) + \frac {5} {a + 2}`