Pls help me if you know this math problem???

What is the slope of the line that contains the points (-2,1) and (0,-3)

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

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.