One way to solve it is writing two equations based on the info so
y = 5x + 10 for members
y = 6x for nonmembers
(the + 10 isn't included in the second equation because nonmembers won't pay a membership fee)
and to find their intersection point (where the values will be the same), you just set them equal to each other:
5x + 10 = 6x
subtract 5x
x = 10 classes
Answer:
An employee would have to work 20 years in order to receive an annual pay of $45,000
Unit Rate is 6:
54 to 9
72 to 12
Unit Rate is 8:
72 to 9
Unit Rate is 10:
120 to 12
70 to 7
Doesn't belong to any category:
81 to 9
