Question

How do you calculate f(x) for the given domain values `f(x) = 4x + 8`; x = 1, 11, 21, 31, 101?

Answer 1

See the example

Explanation:

Picking just one of them as an example:

Given:`" "color(brown)(f(color(blue)(x))=4color(blue)(x)+8)`

`color(brown)(=>f(color(blue)(21))=4(color(blue)(21))+8)`

`=>f(21)=84+8=92`

All you have to do is 'plug' the value in where `x` is!