Question

WILL GIV MEDAL!


Given the function f(x) = 2(x + 6), find x if f(x) = 22.

56

5

38

17

Answer 1

Just plug in f(x)=22 and solve to find x:

22 = 2(x + 6)

Answer 2

oh ok thank you!

Answer 3

x=5
f(x)=22 then 2(x+6)=22
implies x+6=11
therefore x=5

Answer 4

@DebbieG

Answer 5

You're welcome. :)

Answer 6

so the answer would be 5 @DebbieG

Answer 7

Yes, good job. :)

Answer 8

thxx

Answer 9

I was told how to do it like this :
f(x)=2(x+6)
f(22)=2(22+6)
f(22)=2(28)
f(22)=56

& It was right every time ..

Answer 10

wait im confused @DebbieG @Sceenie

Answer 11

@sceenie, that's a different question. THAT is finding f(22), which is DIFFERENT from "find x if f(x) = 22".

If you were told to do that for THIS problem, that's wrong. But if it's "find f(22)" then it's right, but it's different problem.

f(22) is the value of f(x) when x=22.

"x when f(x)=22" is, well, the value of X when F(X)=22. Two different things.