5 + a
A:
a - 1
Step-by-step explanation:
3+x 3 + a + 2
f(x) = becomes f(a + 2) =
x-3 a + 2 - 3
when a + 2 is substituted for x. This last result simplifies to
which matches Answer A.
sorry, can't i suggest going to algebra.com
step-by-step explanation:
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