If Dave runs 1.8 kilometers in the 15 minutes, what is his average rate

For the equation below, x is the input and y is the output. y = -4x + 3 if the input is -8, then the output is

How can you construct perpendicular lines and prove theorems about perpendicular lines

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.