Question

To join the gym, there is a $100 annual fee and a $7 monthly fee for each class you attend. Write an equation in slope-intercept form that models this situation.

Answer 1

x = number of months

7*x = 7 times the number of months

7*x = total cost if you ignore the $100 fee

7x+100 = total cost with the fee of $100 included

y = total cost

y = 7x+100

Final Answer: y = 7x+100

note: the slope is 7 and the y intercept is 100