Possible if they dont have to pay on the same months
68.99
First find what one percent is. Then multiply it by 15 (your markup). Then add it to your original price.
4•3•2•1=24
4 ways to fill the spot for first class
3 ways to fill the spot for second class
2 ways to fill the spot for 3rd class
1 way to fill the spot for 4th class
(x,y) is changed to (x+7,y-7)
It is translated 7 down and 4 to the right.