Posted by katie on Friday, September 2, 2011 at 7:22pm.
f(x)=x^3+4
f=1
f(1)=(1)^3+4
(1)^3=1 because 1X1X1=1
1+4=5
so f(1)=5
f=-1
f(-0)=(-1)^3+4
(-1)^3=-1
because -1x-1x-1=1x-1=-1
-1+4=3
so f(-1)=3
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