1. The demand for personal computers (PC) can be characterized as point elasticity as follows: price elasticity = -5, cross-price elasticity with software = -4, and income elasticity = 2.5.

Is the statement written in points a, b, c, and d below true or false, and is accompanied by a description / explanation / calculation that supports your opinion.

A. Decreasing PC prices will increase the demand for PCs and will also increase total revenue.

b. The cross-price elasticity above indicates that a 5% drop in PC prices will lead to a 20% increase in software demand.

c. Demand for price elastic PC and normal goods PC.

d. A decrease in the price of the software will increase the income received by the PC seller and the software seller.

2. PT. Sejahtera sells a variety of goods for sports and recreation purposes. Although the market response to the company's spring catalog was generally good, the sales of PT. Prosperity's $ 140 has decreased from 10,000 to 4,800 units. During this period, competing stores offered $ 52 off their regular price of $ 137 for luxury clothing bags.

A. Calculate the crossbow price demand for PT. Prosperous.

b. Sales of luxury clothing bags at PT. Sejahtera recovered from 4,800 units to 6,000 units after lowering its price to $ 130 per unit. Calculate the price elasticity of the bow demand for luxury clothing bags. PT. Prosperous.

c. Assuming the value of the price elasticity of the arc obtained in point b above, a further price reduction is determined so that the sales volume of PT. Prosperity returned to 10,000 units.

3. It is known that the production function of a commodity is

Q = 40X + 12X2 - 1.2X3

A. Count the number of input units X to reach the maximum total product

b. Calculate the number of input units X to reach the maximum marginal product

c. Count the number of input units X to reach the maximum average product

4. Management of PT. Santana plans to open a new production facility in East Kalimantan. Based on the information provided by the accounting department, the estimated fixed costs of $ 250000 per year and average variable costs AVC = $ 10 + $ 0.01Q

where AVC is the average variable cost and Q is the output per year.

A. Estimate total costs and average total costs for the coming year with a projected volume of 4000 boxes.

b. Increased productivity of workers due to experience or greater learning during the year at a considerable cost for the company. Estimate the effect of learning on average total cost if the actual total cost is $ 522500 at the actual volume of 5000 boxes

5. PT Anugerah, will establish a factory in Central Java. with planning L as labor, K as capital and Q is the amount of output that must be produced, where:

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