pter 21 Review 1. Global Publishers has collected the following data for recent months: Month March April May June Issues Published 20,500 21,800 17,750 21,200 Total Cost $21,190 22,464 18,495 21,876 Required (a) Using the high-low method, find the variable cost per unit and total fixed costs. (b) What is the estimated cost for a month in which 19,000 issues are published? If required, round answer to the nearest cent