IN NEED OF HELP THX

Question

If f(x) = 2^{(x − 5)}, find f(8).

A.4

 B.6

 C.8

 D.16

Answer 1

Hi there. Hope this helps!

Answer 2

Keef,

The question is asking for the value of the function f(x) when x=8 , that's what f(8) means.

so all we have to do is put in an 8 every place we see a x.

f(8)=2^(8--5) =2³=2*2*2 = 8,

Hope this is clear and helps

Jim