frank has 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 patty of 10 adults and 5 children.

Juanita wade's new car has an msrp of $28,902.11 including title and processing fees. the premier package which includes surround sound and dvd player costs three times the amount of the in-style package which includes leather seats and select wheels. the total cost of her new car was $34,290.08 which included the 6.5% sales tax. find the cost of the premier package to the nearest cent.