Kristen Tran owner of , operates a local chain of floral shops. Each shop has its own delivery van. Instead of charging a flat delivery fee, wants to set the delivery fee based on the distance driven to deliver the flowers. Tran wants to separate the fixed and variable portions of her van operating costs so that she has a better idea how delivery distance affects these costs. has the She following data from the past seven months

using the high low method to determine flowers hours operating cost equation

y =

x +

... Data table Month January February ..... March April ... May June July ... Miles Driven Van Operating Costs 15,700 $5,350 16,500 $5,160 14,500 $4,960 16,000 $5,320 16,300 $5,500 15,100 $5,050 14,000 $4,560