Question

Given the functions:
g(n) = 3n - 5
f(n) = n2 + 50
Find:
(g+f)(8)

Answer 1

`(g + f)(8) =133`

Explanation:

Given

`g(n) = 3n - 5`

`f(n) = n^2 + 50`

Required

`(g + f)(8)`

This is calculated as:

`(g + f)(n) =g(n) + f(n)`

So, we have:

`(g + f)(n) =3n - 5 + n^2 +50`

`Substitute` 8 for n

`(g + f)(8) =3*8 - 5 + 8^2 +50`

`(g + f)(8) =24 - 5 + 64 +50`

`(g + f)(8) =133`