Question

Gregory teaches martial arts. He charges a one−time processing fee of $5.00 and the cost of the classes is shown below. Let x represent the number of classes and y represent the cost of classes. Based on this information, what will it cost to take 10 classes (including processing fee)? Number of Classes, x: 1 2 3 4 Cost of Classes, y: $15 $27 $39 $51

Answer 1

According to the information given it appears that the first class is $15 and each additional class is $12. one class at $15 + 9 classes at $12 + $5 processing fee = $128