David received $50 dollars working at his fathers store. he spent $20 dollers at the movies, and $10 dollers buyin comic books. after buying $5 worth of candy, he saved the rest. what is the ratio of the amount of money david spent to the amount thelat david saved

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.