Calculating break$-$even volume: Monica Lee, administrative director of Digital Imaging Center, has been asked by the practice members to see if it is feasible to add more staff to support the practice$$s mammography service, which currently has two digital imaging units and two technologists, one per machine. She has compiled the following information:

Reimbursement per mammography $-$ $$105$

Equipment lease per month per machine $-$ $$15000$

Equipment maintenance per month per machine $-$ $$10000$

Technologist cost per mammography $-$ $$45$

Technologist aide per mammography $-$ $$30$

Variable cost per mammography $-$ $$15$

a$.$ What is the patient volume needed per month to cover fixed and variable costs?

b$.$ What is the patient volume needed per month if Digital Imaging Center desires to cover it$$s fixed and variable costs and make a $$5000$ profit on this equipment to cover other costs associated with the organization?

c$.$ If reimbursement decreases to $$85$ per mammography, what is the patient volume needed per month to cover fixed and variable costs but not profit?

d$.$ If a new technologist aide is hired, what is the patient volume needed per month at the original reimbursement rate to cover costs but not profit?