Related rates problem need help!
the revenue generated by a product is given by R(x)=700x-(x^2)/5000 and the cost is given by C(x)=300+4x where x is the number of gallons of pesticide produced each week. The rate of production is increasing by 50 gallons per week and the current production is 300 gallons per week. find the rate of change in (a) the revenue R, (b) the cost C, and (c) the profit P=R-C

Question

Related rates problem need help!
the revenue generated by a product is given by R(x)=700x-(x^2)/5000 and the cost is given by C(x)=300+4x where x is the number of gallons of pesticide produced each week.  The rate of production is increasing by 50 gallons per week and the current production is 300 gallons per week. find the rate of change in (a) the revenue R, (b) the cost C, and (c) the profit P=R-C