Question

F (x) = 5x-10 determine x when f (x) = 15

Answer 1

Answer: 5=x

Explanation:

Ok, so if F(x)=15, then the equation would look like this:
`15=5x-10`

The next step would be to add the 10 over from the right to the left side to get
`25=5x`

Now divide both sides by 5 to get the answer.

Answer 2

5(15) = 75
75-10 = 65