Find the area of the region bounded by the graphs of the given equations. y=s,y=;,x=o The area of the region is . (Simplify your answer.) - 1600x Arm has the marginal-demand function D'(x) = 2, where D(x) is the number of units sold at x dollars per unit. Find the demand function given that D = 15,000 when x= $4 per unit. 25-x The demand function is D(x) =