14. Model Real Life A music teacher replaces the strings on 3 violins, 2 cuatros, 4 ukuleles, and 1 bouzouki. There are 4 strings on each of the instruments. How many strings does the teacher replace?
15. DIG DEEPER A customer buys 2 shirts that cost $10 each and a pair of jeans that costs $14. What is the customer's total after using a coupon for- off the entire purchase?