Question

Given that f(x)=x^2 + x and g(x) = 3x + 1,
find the value f(g(4))

Answer 1

110

Explanation:

Given that
`f(x)=x^2 + x` and
`g(x) = 3x + 1` , find f(g(4))

f(g(4)) ==> you always start from the inside (g(4)).

`g(x) = 3x + 1`

`g(4) = 3(3) + 1`

`g(4) = 9 + 1`

`g(4) = 10`

`f(x)=x^2 + x`

`f(10)=10^2 + 10`

`f(10)=100 + 10`

`f(10)=110`

Final answer, 110.

Hope this helps!