We have been given:
and,
We need to find,
First of we will calculate and for that we need to plug in into , we get:
Now that we have , we can calculate , we need to plug in the value of into to find .
We get:
Therefore,
Now, we need to find (fogoh)(4), plugging the value of x=4 in our final function, we get:
So, (fogoh)(4)=28.