Answer:
1. 20 units
2. $600
Explanation:
1. 
MC = 4q
Price, P = $80
For maximizing profits,
Marginal cost = Price of the commodity
4q = 80
q = 20 units


= 200 + 800
= 1,000
2. Profit = Total revenue - Total cost
= (Price × Quantity) - TC
= (80 × 20) - $1,000
= $1,600 - $1,000
= $600
3. We know that the firm in the short run will be produce at a point where total revenue is greater than the total variable cost
Average variable cost = variable cost ÷ quantity

= 2Q
MC = 4Q
Here, MC is greater than AVC at any given point.
so in the short run firm will producing short run positive profit.
Answer:
See bellow
Explanation:
With regards to the above, Rouse total stockholder's equity is computed as;
= Preferred stock + common stock + paid in capital in excess of par (preferred stock and common stock) + retained earnings - Treasury stock
= $150,000 + $1,950,000 + $60,000 + $27,000,000 + $7,650,000 - $630,000
= $53,730,000
Answer: In order to maximize utility, Ellie should buy more of Alpha and less of Beta
Explanation: Marginal utility is the quantity of added satisfaction that a consumer enjoyed from consuming additional units of goods or services. Marginal utility is the additional satisfaction or benefit (utility) that a consumer derives from buying an additional unit of a commodity or service. However, in determining how much of an item consumers are willing to purchase marginal utility is used.