Question 3: Yarlan Gravity Grips produces spike sets for track shoes. CEO Brittany Yarlan has gathered the following information about the company's sales volume and marketing cost for the past six months. (25 Points) Sales Volume Total Marketing Costs January 550,700 $82,770 February 390,500 74.525 March 561,000 83.050 April 543.000 82.330 May 546,600 82.480 June 553.900 82.960 Required: a. Using the high-low method, compute the variable marketing cost per spike set. b. Compute the total fixed marketing cost