M5-10 (Algo) Estimating Cost Behavior Using High-Low Method [LO 5-3] Sherri's Tan-O-Rama is a local tanning salon. The following information reflects its number of appointments and total costs for the first half of the year: Using the high-low method, calculate the total fixed cost per month and the variable cost per tanning appointment. (Round your "Variable Cost per Unit" answer to 2 decimal places and "Fixed Cost" answer to the nearest dollar amount.)