319049
as 100,042 + 98,117 + 120,890 = 319,049
We can use FOIL to solve.
(x + 7)(x + 10)
(x * x) + (x * 7) + (7 * x) + (7 * 10)
x² + 7x + 7x + 70
x² + 14x + 70
Best of Luck!
For this case we have the following functions:

We must find
. By definition we have to:

So:

Finally, the composite function is:

Answer:
