a. During the next five years, per capita disposable income is expected to increase by $5,000 and AJ is expected to increase its price by $12. What effect will this have on the firm's sales volume? b. If MK wants to change its price by enough to offset the above effects, by how much must it do so? c. Compare the profitability of maintaining sales volume by either changing price or changing advertising spending. d. If MK's current price is $60 and it spends $10,000 per month on advertising,whilepercapitaincomeis$25,000andAJ'spriceis$70,calculate the price elasticity of demand with the price change. e. What can be said about the effect of the above price change on profit? f. WhatcanbesaidabouttherelationshipbetweentheproductsofMKandAJ?