18 ) have 40 staff . 30 are paid $29 an hour and others are fixed salary staff with $7 500 paid monthly . What is the total cost of personnel ? The cost of a pen includes $30 for the glass , 575 for the wooden frame , and $80 for assemble The assembly desk and tools cost $5000 . Two hundred fifty frames are expected to be produced in the coming year . What cost function best represents these costs A) = 185 + 50 0X B ) = 500 + 185X Cy = 3.85 + 60OX D ) y = 1.05 + 50 0 X 3 . An Accountant is to make a selection from the list of cost functions below . Which of the following do you think is the best A ) = 200 + 5X B ) = 200 + 5.50X Cy = 200 + 4 .50X D ) y = 200 + 4 .7 0X