Question

Who can solve this:
The cost and revenue of a refrigerator manufacturer can be modeled respectively by the equations C= 87,000 + 150x and R= x^2 - 80,500 where x is the number of units produced in one week . If production in one particular week is 500 units ans is increasing at a rate of 300 units per week, find the rate at which the profit is changing. Please show your work.

Answer 1

how do we define profit?