Problem:
A cell phone plan costs each month, plus cents per text message sent, plus cents for each minute used over hours. In January Michelle sent text messages and talked for hours. How much did she have to pay?
Answer Choices:
A.
B.
C.
D.
E.
Solution:
The text messages cost , and the 30 minutes of excess chatting cost . Therefore the total bill came to .
The problems on this page are the property of the MAA's American Mathematics Competitions