Final answer:
To determine how many times Massimo rode the bus this month, we can set up and solve an equation representing the total cost of his rides. Using the given information that Massimo spent $90 on bus rides and the bus company charges $10 per month plus $2.50 per ride, we can solve for the number of rides as 32.
Step-by-step explanation:
To solve this problem, we need to set up an equation representing the total cost of Massimo's bus rides for the month. The equation can be written as:
Cost of bus rides = $10 + $2.50 * number of rides
We know that the total cost of bus rides for the month is $90, so we can substitute that value into the equation to solve for the number of rides:
$90 = $10 + $2.50 * number of rides
Subtract $10 from both sides:
$80 = $2.50 * number of rides
Divide both sides by $2.50:
number of rides = 80 / 2.50
number of rides = 32
Therefore, Massimo rode the bus 32 times this month.