Question

If `f(x) = 6x—3`, what is the value of `f(1)+f(2)`?

Answer 1

`f(1) + f(2) = 12`.

Explanation:

To get to this answer we have to substitute `x` in `f(x)`by `1` and then by `2`. How? Let's see:

`f(x) = 6x - 3`. So,
`f(1) = 6(1) - 3 = 6 - 3 = 3`,
`f(1) = 3`.
`f(2) = 6(2) - 3 = 12 - 3 = 9`,
`f(2) = 9`.

So, `f(1) + f(2) = 3 + 9 = 12`,
`f(1) + f(2) = 12`.

Hope it Helps! :D .