3. The demand function for an appliance company's line of washing machines is p = 300 - 59 where p is the price in dollars) per unit when units are demanded (per week) by consumers. Find the level of production that will maximize the manufacturer's total revenue and determine this revenue. (3) 4. For stationary manufacturing shop the marginal cost of one box of pencils is $5. The total cost to produce 2,000 boxes is $14,000 a) Find the formula for the total cost function assuming it is linear. Marks (3) b) What is the fixed cost for this production? (1) c) Assuming that each box is sold for $7.5, what is the number of boxes produced and sold for the shop to break even? (3)