NOTE: Cost and reveme functions are linear equations and are therefore straight lines. Draw these functions by using a ruler. Free-hand drawn lines are not acceptable. Use the full graph paper. 1. BCS supplies building materials to small and mid-sized contractors in the Huntsville area BCS sells dry walls to the local builders. The cost of a 4'x8 pack of Dry Wall is $80 and it is sold for $140 to customers. BCS has monthly fixed cost of $9,000. a What is the markup percentage? b. What is the margin percentage? c. Write cost and revenue functions. Plot the cost and revenue functions on a graph paper and clearly show the break-even point. What is break-even pint in terms of quantity and revenue? Write your answer in words. d. What would be the profit if () 120 packs of dry wall is sold in a month? (1) 170 packs of dry walls sold in a month? 2. Huntsville Home Supply (HHS) sells its product to local customers. An instant water heater is in high demand and it cost HHS $560 per unit. a. What is the markup in percentage if its selling price is $680? b. What is margin in percentage if the water heater is sold for $7002 c. HHS has a monthly fixed cost of $15,000 and decided to sell water heaters for $700 per unit i What is the break-even point in terms of quantity and revenue? What would be the profit if 120 heaters are sold per month? 11