Question

If `f(x)=3x-12`, what is the value of `f(10)`?

Answer 1

18

Explanation:

Wherever `x` is substitute 10

`color(green)(=>f(color(red)(x))=3color(red)(x)-12" "->" "f(color(red)(10))=3(color(red)(10))-12)`

`f(10)=30-12=18`