Question

Find (h.f.g)(-2) if f(x) = x2 - 5, g(x) = 3x + 1, h(x) = x + 3

Answer 1

is that hxfxg or composite functions?

Answer 2

yes

Answer 3

yes to which one?

Answer 4

composite

Answer 5

ok, well, when you have a composite function, you work from the inside out.
First figure out the innermost value (which would be f(-2). Then plug that into g(x) and then plug the value you got for g(x) into f(x)

Answer 6

im really lost with this could u get me the answer plz that would be greatly appricated

Answer 7

well, first calculate h(-2)=(-2)+3
Then calculate g(h(-2)
And then f(g(h(-2)) :D

Answer 8

im still not gettin it

Answer 9

i might have told u the wrong thing this is what i am looking for (hfg)(-2) =

Answer 10

:? what about it?
ok-- f(g(h(-2))))=f(g(-2+3))=f(g(1))=f(3(1)+1))=f(4)=4^2 -5=9

Answer 11

Oh, sorry, my bad
ok, we just switch it around a little

Answer 12

h(f(g((-2))))=h(f(3(-2)+1)))=h(f(-5))=h(25-5)=h(20)=20+3=23

Answer 13

THANK U

Answer 14

:D but do u understand how to do solve it urself?

Answer 15

YES I THINK SO ITS STILL KINDA HARD THO

Answer 16

if u get another question like it i can try helping u understand :)