You want to spend less than $39 at a local fair. Admission is $24 and each ride cost $2.50. At most, how many ride can you go on? Write and solve an inequality to model this situation.

6 rides : 2.50r + 24 < 39
5 rides : 2.50r + 24 < 39
5 rides : 2.50r + 39 < 24
6 rides : 2.50 + 24r > 39