A company charges $0.10 for each letter engraved. Bobby plans to spend no more than $5.00 on the engraving on a jewelry box. Write and solve an inequality to find the maximum number of letters he can have engraved.
a. Suppose David has $65 to spend on his ticket and some shirts. He already spent $32.25 on his ticket and fee. Write an inequality that could be used to find the maximum number of shirts he can buy.