Question

Let f(x) = -4x + 7 and g(x) = 10x - 6, find f(g(x)).

-40x + 24

-40x + 31

-40x + 64

-40x + 70

Answer 1

@ivettef365

Answer 2

same routine?

Answer 3

same thing substitute the x of f(x) for 10x -6

Answer 4

so... -4x(10x - 6) + 7?

Answer 5

lets see... distribute...

10x(-4x) - 6(-4x) + 7

Answer 6

so... -40x - 24x + 7?

Answer 7

wait maybe take out the x of 24 and then add 7 so its -40x - 31?

Answer 8

remember it is by 4 not 4x so you have
-4(10x) -4(-6) +7 also remember that - times - is positive

Answer 9

right so its -40x + 31?

Answer 10

correct, good job

Answer 11

thanks! I have one more question for ya then im done :)

Answer 12

ok