Question

f(x)=2x+3^2
h(x)=3
what does (f(h(x))) equal
what does (h(f(x))) equal

Answer 1

f(h(x)) = 2(3)+3^2 = 6+3^2
h(f(x)) = NIL

Answer 2

what does NIL mean?

Answer 3

means nothing

Answer 4

f(h(x))=f(x,x=h(x)=3)=6+9=15;
h(f(x))=h(x,x=f(x))=3 since h(x) is a constant.