Question

If f(x)=-3x and g(x)=7x+3 find:
f(g(x))

Answer 1

hint:

f(x) = -3x

f( g(x) ) = -3( g(x) ) ... replace every x with g(x)

I'll let you finish up

Answer 2

So would it be -3(7x+3)) then should I distribute?

Answer 3

yes and what do you get?

Answer 4

-21x+ -9?

Answer 5

which is -21x - 9

Answer 6

so f( g(x) ) = -21x - 9

Answer 7

Thank you

Answer 8

you're welcome