Mindy made three purchases for , , and . What was her total, to the nearest dollar? Solution On the AMC 8 contest Billy answers 13 questions correctly, answers 7 questions incorrectly and doesn't answer the last 5. What is his score?
Theresa's parents have agreed to buy her tickets to see her favorite band if she spends an average of hours per week helping around the house for weeks. For the first weeks she helps around the house for , , , and hours. How many hours must she work for the final week to earn the tickets?
Bridget bought a bag of apples at the grocery store. She gave half of the apples to Ann. Then she gave Cassie 3 apples, keeping 4 apples for herself. How many apples did Bridget buy?