Emilio has a coupon for 20% off of his purchase at a store with no sales tax. He finds a backpack that is already on sale for 30% off. The store will apply his coupon to the sale price of the backpack. If the original price of the backpack is $65.00, how much will Emilio pay?

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.