Cal spent 4 times as much time working on the science fair project as Emmet. Together, they spent 720 minutes working on the project. Which equation can be used to find how many minutes each spent on the science fair project?

What is the answer to this problem 7 * 5/6

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges

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.