Given a total-revenue function R(x)=1200 square root

G 1 3 Given a total-revenue function R(x) = 12001) x2 0.2x and a totalcost function C(x) = 2200 (x2 + 3) + 900, both in thousands of dollars, nd the rate at which total prot is changing when x items have been produced and sold. P'(x) =