Mrs. Start's class paid $5.60 for 4/5 yd of lace for an art project. Later, the class decided to buy another 7 3/4 yd of the same lace to make costumes for the school musical. How much money do they need for this second purchase?

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?