Question

Given the function f(x) = 2(x + 10), find x if f(x) = 24.

Answer 1

Is the answer 7?

Answer 2

We know that \(f(x) = 24\).
We also know that \(f(x) = 2(x + 10)\)
So, \(2(x + 10) = 24\)

Answer 3

And nope... not 7.

Answer 4

after you distribute the 2. do you subtract 10 from 24 or 24 from 10?

Answer 5

2

Answer 6

oh hold on i distributed it wrong.

Answer 7

Don't distribute—divide both sides by 2.\[2(x + 10) = 24\implies {2(x + 10) \over 2} = 24 \]Okay?

Answer 8

Oops...\[{2(x + 10) \over 2} = {24 \over 2} \]

Answer 9

ohh i see! i got 2 as my answer but i still distributed

Answer 10

Works both ways. :3

Answer 11

oh so its 12?

Answer 12

No. The answer still stays 2.

Answer 13

okay. thank you!!

Answer 14

You're welcome! c: