meltric is hiring a dog walker he looks up 3 dog walkers the relationships between the number of minutes that they dog walk and the amount of money in dollars that they each charge are represented in different ways below metris needs a dog walker for 80 minutes how much less expensive in dollars would the least expensive dog walker be when compared to each of the two other dog walkers justify your answer by using equations that represent the cost of each dog walker . define each variable you use A4 gr6 20-21 form E online