Answer:
A. average total cost is rising.
Explanation:
Whenever marginal cost is more than average cost it means it costs more to produce a unit now compared to the average cost of the previous units. Lets assume that a company produces 3 units of a good.
The first unit costs $1
The second unit costs $2
The third unit costs $3.
The average cost is (1+2+3)/3=2
Now if the marginal cost for producing a unit is more than the average cost for example if the marginal cost is 4, then this will mean that average total cost is rising. we can mathematically check this.
The first unit costs $1
The second unit costs $2
The third unit costs $3.
The fourth unit costs $4
Average cost= (1+2+3+4)/4=10/4=2.5
Here we see that the average cost increased from 2 to 2.5 because marginal cost was greater than average cost.
Yes, because firms produce where the marginal benefit to consumers equals the marginal cost of production.
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:
Bond Value is $347.30
Explanation:
Zero coupon bond does not offer any return on the bond that's why it is issued on deep discount value.
Number of years = n = 20 years
Face value = F = $1,000
YTM = 5.43%
Price of the Bond = [ F / ( 1 + r )^n ]
Price of the Bond =[ $1,000 / ( 1 + 5.43% )^20 ]
Price of the Bond =[ $1,000 / ( 1.0543 )^20 ]
Price of the Bond = 347.30