For a perfectly competitive firm, total cost TC=300Q-20Q²+0.5Q³

a. Determine the firm's marginal cost(MC) and Average Total Cost(ATC):

b. Determine the firm's long-run profit maximizing output and price:

c.If Price=146, what quantity will the perfect competitor produce at this price?

d. If Price=146, what is the perfect competitor's economic profit?

How can the long-run average cost (LRAC) curve be derived from the short-run average total cost (SRATC) curve?

• How can the long-run average cost (LRAC) curve be derived from the short-run average total cost (SRATC) curve?
• Describe economies of scale and diseconomies of scale.
• What are the determinants of economies of scale and diseconomies of scale, respectively?
• Using a real-world company (other than Sysco), explain the causes of economies of scale for your company.
• How would economies of scale help your company compete in its industry?

A graph G = (V, E) is a near-tree if it is connected and has at most n+ 8 edges, where n = |V |. Give an algorithm with running time O(n) that takes a near-tree G with costs on its edges, and returns a minimum spanning tree of G. Assume all the edge costs are distinct.

Samuelson and Messenger (SAM) began 2021 with 320 units of its one product. These units were purchased near the end of 2020 for $24 each. During the month of January, 160 units were purchased on January 8 for $27 each and another 320 units were purchased on January 19 for $29 each. Sales of 215 units and 210 units were made on January 10 and January 25, respectively. There were 375 units on hand at the end of the month. SAM uses a periodic inventory system. 1. Calculate ending inventory and cost of goods sold for January using FIFO. 2. Calculate ending inventory and cost of goods sold for January using average cost.

1. Calculate ending inventory and cost of goods sold for January using FIFO.
2. Calculate ending inventory and cost of goods sold for January using average cost.

okay so I took this quiz and these are the answers I put. there are 13 questions but I am not sure what I am getting wrong. all I know is I got 9 out of 13 right.

• A population's dispersion pattern is related to

1. the likelihood of competition between individuals.
2. individuals' chance of finding a mate.
3. Both
4. neither

• A population has the greatest number of individuals

1. when numbers are near (or at) the carrying capacity.
2. when numbers are near half of the carrying capacity.
3. when numbers are at a minimum (near zero)
4. (none of the above - population sizes do not change.)

• A population's growth rate is likely to be highest

1. when numbers are near (or at) the carrying capacity.
2. when numbers are near half of the carrying capacity.
3. when numbers are at a minimum (near zero)
4. (none of the above - population growth rates do not change.)

• The size of a population

1. always increases to a maximum, then remains constant for ever.
2. may increase and decrease cyclically.
3. always increases to a maximum, then decreases to zero.
4. (none of the above)

• A life table is useful for

1. describing changes in population size over a range of time.
2. describing the range of individual reproductive rates in a population.
3. (both)
4. (neither)

• As song sparrow population density increases,

1. the average reproductive success of individual song sparrows tends to increase.
2. the average reproductive success of individual song sparrows tends to decrease.
3. the average reproductive success of individual song sparrows does not change.
4. the average reproductive success of individual song sparrows is unpredictable.

• Mosquitos have a life history that is near the extreme of

1. r-selection.
2. K-selection.
3. (both)
4. (neither)

• During the early and middle twentieth century, there was

1. a sharp increase in human birth rate.
2. a sharp decrease in human death rate.
3. (both)
4. (neither)

True/False:

• If you ask a population ecologist, all the individuals in a population belong to the same species. : True
• A single population might exist in multiple territories that do not overlap, with no migration of individuals between territories.,true
• A population's carrying capacity depends on the action of parasites. fasle
• Most populations have a random dispersion pattern. False
• In general, animals are most likely to die at an age near their maximum possible lifespan. fasle

The Utah Mining Corporation is set to open a gold mine near Provo, Utah. According to the treasurer, Monty Goldstein, “This is a golden opportunity.” The mine will cost $2,600,000 to open and will have an economic life of 11 years. It will generate a cash inflow of $365,000 at the end of the first year, and the cash inflows are projected to grow at 8 percent per year for the next 10 years. After 11 years, the mine will be abandoned. Abandonment costs will be $420,000 at the end of Year 11.