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

When they ask for something like this you just place g(x) into all x for f(x)

so it looks like

f(g(x))= -4(10x-6) + 7

you can simplify this by expanding the bracket.

Answer 2

Let f(x) = 9x - 2 and g(x) = -x + 3. Find f(g(x)).

-9x - 2

-9x + 5

-9x + 25

-9x + 27

Answer 3

i got -9x + 29

Answer 4

but none of my choices are that

Answer 5

Well plug g(x) in the x for f(x)

9(-x+3)-2

-9x+27-2

-9x+25

Answer 6

You added 2 instead of subtracted it

Answer 7

ohhh okay thanks

Answer 8

You're welcome