Abathtub is filling with water at a rate of 60 liters per minute. how many liters of water are in the bathtub after t minutes? write your answer as an expression.

This size running track is usually called a 400 meter track. however if a person ran as close to the inside as possible on the track they would run less than 400 meters in one lap. how far away from the inside border would someone have to run to make one lap equal exactly 400 meters