21 (3 points) The controller of Sommet Inc. has requested a quick estimate of the manufacturing supplies costs needed to produce 540,000 units in July. The company reports the following actual data for the last three months. Month March April May Production in Units Manufacturing Supplies 485,000 $691,760 610,000 854,260 550,000 767,610 Using the high-low method to develop a cost estimating equation, the total estimated cost of needed manufacturing supplies for July would be: $769,760. $702,000. $763,260. $708,500