Question

If f(x) = 5x^2 − 4 and g(x) = x − 2, what is (f*g)(-3)?

Answer 1

HANDWRITTEN TIME fOR ME, I'M ON IT

Answer 2

This is only an exercise in understanding the notation.

Can you find g(-3)?

Answer 3

25 is ur answer, sorry about earlier, caps lock was on

Answer 4

25 isn't an option and yeah give me a sec tkhunny

Answer 5

-5?

Answer 6

Perfect. Now, just to be VERY CLEAR, which one of these is what your problem statemetn says?

fºg
f*g

It's a circle (iteration) or a star (means multiplication).

Answer 7

circle

Answer 8

Okay, this means you take the value from g(-3), which is -5, and put that into f.

g(-3) = -5
Find f(-5).

Answer 9

121?

Answer 10

That's what I get.

It may also be written f(g(-3)) This is the same thing.

Answer 11

so that's the answer?

Answer 12

Did we do what was asked? Yes. We're done.

Answer 13

Thank you!

Answer 14

do you have another question about this process?