Question

If f(x) =

(3+2)
what is a + 2)?
(x-3)
O A.
(5+a)
(a -1)
O B.
3+ f(a +2)
(a)-1
O c.
(3+a)
+2
(a-3)

Answer 1

5 + a

A: ---------

a - 1

Explanation:

3+x 3 + a + 2

f(x) = ---------- becomes f(a + 2) = ------------------

x-3 a + 2 - 3

5 + a

when a + 2 is substituted for x. This last result simplifies to ------------

a - 1

which matches Answer A.