Question

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

32

12

14

10

Answer 1

\[ 2(x − 4)=20\iff x-4=10\iff x=14\]

Answer 2

You should equate the values.

\( \color{Black}{\Rightarrow 20 = 2(x - 4) }\)

First step would be to distribute.

\( \color{Black}{\Rightarrow 20 = 2x - 8}\)

Please tell me that you know how to solve equations :P