MTR
7 30. MODELING REAL LIFE One bus ride costs $0.75) One
subway ride costs $1. A monthly pass for unlimited
bus and subway rides costs the same as 36 bus rides
plus 36 subway rides.
a. Write an equation in standard form that models
the possible combinations of bus and subway rides
with the same total cost as the pass.
b. Graph the equation from part (a).
c. You ride the bus 60 times in one month. How
many times must you ride the subway for the total
cost of the rides to equal the cost of the pass?
Explain your reasoning.