Kelly Tran, owner of Rose Ready, operates a local chain of floral shops. Each shop has its own delivery van. Instead of charging a flat delivery fee, Tran 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. She has the following data from the past seven months (Click the icon to view the data.) Use the high-low method to determine Rose Ready's cost equation for van operating costs. Use your results to predict van operating costs at a volume of 15,500 miles. Let's begin by determining the formula that is used to calculate the variable cost (slope). = Variable cost (slope) - X Data table Month Miles Driven 16,400 17,500 Van Operating Costs $5,480 $5,400 15,000 $4,950 January...... February March April May June 16,100 17.300 $5,270 $5,740 $5,440 15,600 July ......... 14.500 $4,680 Print Done