+472
9.) Suppose you had d dollars in your bank account. You spent $13 but have at least $44 left. How9.
much money did you have initially? Write and solve an inequality that represents this situation.
Write a compound inequality that represents each situation. Graph your solution.
10. On I25 between Denver and Colorado Springs the speed limit is 75mph, however, there are areas
where the minimum speed in the left lane is 50mph. Write and graph an inequality to represent the
legal speed that can be driven.
15. You have $38 to spend at the music store. Each cassette tape costs $7 and each CD costs $10. Write
and graph a linear inequality that represents this situation. Let x represent the number of tapes and y
the number of CDs.
16. Max sells lemonade for $2.50 per cup and candy for $1.50 per bar. He earns $489 selling lemonade
and candy.
a. Write a linear model that relates the number of cups of lemonade he sold to the number of bars of
candy he sold.
b. If Max sold 96 bars of candy, how many cups of lemonade did he sell?
17. Mike sold a third of his comic books and then bought 5 more. He now has 19.
a. Write an equation that models this situation.
b. How many comic books did he start with?
