What is the domain of the function graphed above?

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.

Jim had 15 minutes to do 5 laps around his school what would his time be

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?