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

Answer:

b

Step-by-step 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:

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