for 2018, what is the projected operating profit given the following information for a doctors office?

the office is expecting 4,300 patient visits in 2019 and has estimated the cost function as follows:

y=$128,004 + $15.60x

where “y” is the total cost and “x” is number of visits. Budgets revenue is $57 per visit. This is a non profit entity and does not pay taxes.

1.) whats the operating profit for 2019?

2.) breakeven point, margin of safety in units and sales $?

please supply step by step instructions