Question

Find (f º g)(–2) if f(x) = 4x – 3 and g(x) = 3x + 3


a. 10
b. –4
c. –15
d. 0

Answer 1

That is a smart retricedog

Answer 2

he ᕙ(⇀‸↼‶)ᕗ

Answer 3

sub g(x) into f(x) then set x=2

Answer 4

for example

g(x) = x^2
f(x) = 3x + 1

then,

(f º g)(–2)

f(g(x)) = 3(x^2) + 1

f(g(-2)) = 3(-2)^2 + 1

Answer 5

so d?

Answer 6

@Australopithecus ?

Answer 7

not what I got

Answer 8

http://www.purplemath.com/modules/fcncomp3.htm

Answer 9

if you dont understand my solution you should check out this website it explains it pretty well

Answer 10

or example

Answer 11

you might have made an algebra mistake as well

Answer 12

-4?

Answer 13

Lets go over this one step at a time

what is

f(g(x))?

Answer 14

hint:
f(g(x)) = f(3x + 3)

Answer 15

look at my example if you are confused

Answer 16

are you jake's father?

Answer 17

if you had a function

f(x) = 3x

we can sub stuff into the function

f(2) = 3(2)
f(4) = 3(4)
f(-5) = 3(-5)

this is the same situation with composite functions only you are subing a function into another function

Answer 18

adventure time is pretty great

Answer 19

but no that is not where my avatar is from