Suppose that the dollar cost of producing x appliances is c(x) = 1400 + 90x-0.1x.a. Find the average cost per appliance of producing the first

Suppose that the dollar cost of producing x appliances is c(x) = 1400 + 90x-0.1x².a. Find the average cost per appliance of producing the first 110 appliances.b. Find the marginal cost when 110 appliances are produced.c. Show that the marginal cost when 110 appliances are produced is approximately the cost of producing one more appliance after the first 110 have been made, by calculating the latter cost directly