To find the number or rows, divide the total number of students by the number in each row.
63 / 7 = 9 rows.
This one is easy all you have to do is subtract the 2.25 by the 15 to get 12.75.
Multiply $20 by 20% good luck
Soo what do you need help with? It seems pretty easy. I can help you if you want.
