Question 4: (10 marks) (BI, C3) Ahlia Co manufactures mobile phones. It has been extremely successful in the past, but the market has become extremely competitive. The company is considering a number of different strategies to improve its profitability. The most successful product is the Y99 which is sold for $110. Weekly demand is currently 20,000 phones. Market research has revealed that if Ahlia Co reduced the price of the Y99 by $10, demand would increase by 2,000 phones. The product has a constant variable cost per unit of $60. Instructions: 1. Determine the demand function. (4 marks) 2. Determine the output level to maximize profit. (4 marks) 3. Determine the price to be charged to maximize profit. (2 marks)