Question

If g(x) = 2(x − 4), find the value of x if g(x) = 20.

Answer 1

32

Answer 2

20 = 2(x-4)
10 = x - 4
14 = x

Answer 3

2(x-4) = 20
2x - 8 = 20
2x = 20 + 8
2x = 28
x = 28/2
x = 14

Answer 4

annas solved g(20).

Answer 5

32

Answer 6

Not the problem being asked.

Answer 7

Savvy made the same mistake.

Answer 8

Thank you (:
This one always gets me confused.

Answer 9

yeah..!!!! i made it...

Answer 10

@Rainbow.ninja you got this question earlier !!

don't post them twice for no reason !

http://openstudy.com/study#/updates/4f7c9f56e4b09f22231b9110

there was nothing that any random calculator could do !

Answer 11

Sorry ..>.>

Answer 12

Once you understand that a function has a value for different values of its input, you will understand these problems rather easily.

In this case, you are given the value of the function and being asked what "input" produces that value. In the other case, you are given the input and asked what value does the function have.

Answer 13

@kreshnik She posted again because she never got a confirmation whether the answer was 14. She did ask if that was right.

Answer 14

Thank you @gt

Answer 15

when she asked I wasn't there... she didn't mentioned me so I could confirm. but anyway...

my mother is a teacher.. she teaches kids like 7-8 years old.
I'm SURE they could have solved the rest of the task I left for @Rainbow.ninja

I think we should HELP not DO their homework @GT

Answer 16

He was HELPING me..