Following is cost data for the equipment maintenance department.This department charges other depart

Following is cost data for the equipment maintenance department.This department charges other departments for the actual cost ofmaterials and labour when making equipment repairs. The managersnow want to develop a cost function that explains their overheadcosts as a function of the number of service calls made eachmonth. REQUIRED A.  Estimate the department’s costfunction using analysis at the account level. B.  Using the cost function estimatedin part (A), estimate the overhead cost for June if 135 servicecalls are expected. . . .