Luke always runs 1 lap to warm up for track practice. alex always runs 3 laps to warm up for track practice. write the number of total laps ran for 1,2,3, and 4 practices for each student. then compare the total number of laps ran for 3 practices by both students.

Luke ran 1 lap for 1 practice, 2 laps in 2 practices, 3 laps in 3 practices and 4 laps in 4 practices

Alex ran 3 laps for 1 practice, 6 laps in 2 practices, 9 laps in 3 practices, and 12 laps in 4 practices

Luke ran 3 laps in three practices and Alex ran 9 laps in 3 practices