Kallie Smith, owner of Flowers 4 You, operates a local chain of floral shops. Each shop has its own delivery van. Instead of charging a flat delivery fee, Smith wants to set the delivery fee based on the distance driven to deliver the flowers. Smith 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:

Use the high-low method to determine Flowers 4 You's cost equation for van operating costs. Use your results to predict van operating costs at a volume of 17,000 miles.