Ron Lee, a marketing clerk for Star Agency, recorded the following information for last year: Month January February Customer Service Costs $526,923 544,025 482, 205 March 666,950 April May June July August September October November December Number of Customers 354 415 332 519 398 455 364 493 343 523 441 413 530,200 656,610 543,530 680, 200 486,990 707,585 628,730 541,800 He would like to be able to estimate customer service costs using the number of customers as the basis for estimation. However, because he has never taken a course in managerial accounting, he does not know how to set up a cost equation. He has therefore approached you for help. Required: 1. Set up a cost equation for monthly customer service costs using the high-low method. Y= 2. Using the equation from part (1), compute the estimated customer service costs if the number of customers is expected to be 680. Customer service costs