Question

Find f(x)·g(x) if f(x) = 3x and g(x) = x + 1.






A.

3x^2 + 3x





B.

3x + 1





C.

4x + 1





D.

3x^2 + 1

Answer 1

A

Answer 2

Multiply 3x and x + 1 together.

Answer 3

(3x)·(x+1)

Answer 4

A right?

Answer 5

Yup.

Answer 6

Find F o G if f(x) = 2x - 1 and g(x) = x + 2.






A.

2x - 3





B.

2x + 1





C.

2x - 1





D.

2x + 3

Answer 7

(F o G)(x) = f( g(x) ) so if f(x) = 2x - 1 and g(x) = x + 2, then f( g(x) ) = 2(x+2) - 1

Does this make sense?

Answer 8

I got B

Answer 9

2(x+2) - 1 = 2x + 4 - 1 = 2x + 3

Answer 10

Is this clear? No?

Answer 11

kinda My answer is D.

Answer 12

Yeah. What part don't you understand? I'd be glad to clarify it.

Answer 13

for the second one yea it's D

Answer 14

so the answer is D right?

Answer 15

Yes.