The rental fee to rent a trench digger is represented in the equation y = 25x, where y represents the total rental fee, and x represents the number of hours the digger is rented. What is the constant of proportionality between the total rental fee and the number of hours a digger is rented?
The reason I say this is because if you rent this trench digger you would pay $25 an hour. This is the only answer that makes sense according to the way the questions states the numerical definitions.
