Question

Perform the required operations on the following functions.

Given: f(x) = 3 - x; g(x) = -2x

Find g[f(x)].

Answer 1

The answer choices are

2x-6

-x-6

2x+3

Answer 2

To me it seems we have to input values, but I do not know how. If I had to guess I would say

-2x[3-x{x)]

Answer 3

given f(x) = 3-x
and g(x) = -2x

so to find g(f(x)) just substitute the f(x) in place of x inside the equation of g(x)

ok. ?

Answer 4

liike I did?

Answer 5

or did I do it wrong

Answer 6

not is right because you substitute in place of x so this x will be eliminate and you get

g(f(x)) = -2(f(x)) so how you wrote there above are to much x-es there

ok. ?

Answer 7

okay so what is the correct version?

Answer 8

g(f(x)) = -2(3-x) = ?

Answer 9

what you dont know ?

Answer 10

so it is 2x+3

Answer 11

why +3 ?

Answer 12

the two negative would cancel out right?

Answer 13

-2*3 = ?

Answer 14

-6

Answer 15

oh okay so 2x-6

Answer 16

exactly

Answer 17

Thanks a bunch!

Answer 18

was my pleasure but do you understand it now sure ?

Answer 19

Yes i believe so. But I do have one more.

Answer 20

ok just post it on the open questions column and tag me there please