A farmer is producing strawberries in a perfectly competitive market. His cost function is given by
c(y)= y^2 + 1000
c) Where will the farm maximize profits if the price for a kg of strawberries is R160.

I assume y is the number of kg produced or sold.

Thus, R=160y

Remember, P=R-C

Profit=Revenue-Cost

Thanks so much for your help!