Use the high-low method to det volume of 15,000 miles. Let's begin by determining the f Month Miles Driven Van Operating Costs January... 15,500 $5,390 February .... 17,400 $5,280 March . 15,400 $4,960 April 16,300 $5,340 May.... 16,500 $5,450 June .... 15,200 $5,230 July ... 14,400 $4,680 redict van operating costs at a