Prove the divisiblity of each of the following numbers. 16^5+2^15 by 33

If anyone has done the algebra 2 chaos theory portfolio would you be wiling to me? i kind of know what i'm doing i just don't know if i'm doing it right.

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x