Plz solve these questions

The daily demand function for x LED lights sold by a major retailer with a monopoly on the market is given by: p=1147.50.25x dollars Meanwhile the per unit average cost is: C=255+4x dollars If the retailer sells LED lights at a selling price of $ , they will maximum profit. Suppose that to produce x shoes, the average cost is: C=x110+53+34x dollars per shoe If the shoes are sold in a competitive market where the current market price is $73 per shoe, find the production level that results in the maximum profit. x= For the given cost function C(x)=67600+300x+x2 Find the average cost function: C(x)= Find the production level that will minimize the average cost: x= items Find the minimal average cost