Answer:
(i) Q=300
(ii) Elasticity of Demand=-3.33 (elastic)
(iii) Income Elasticity= 2.5 (normal good)
(iv) Advertising Elasticity: 1.5
Explanation:
The Demand function is given by

(1) To solve (i) we need to replace P = 200, I = 150, and A = 30 in the demand equation:

(2) To find the price elasticity (how much quantity demanded changes with price) we use the point price elasticity formula

From the above equation we get: 
Replacing in the elasticity formula

in absolute terms the elasticity is bigger than one so it is an elastic demand.
(3) For income elasticity (how much quantity demanded changes with income), we proceed similarly as above. But the derivative is respect to income
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Which is bigger than one, denoting this is a normal good because it's bigger than one.
(4) Advertising elasticity (how much quantity demanded changes with expenditures in advertising), we proceed as before

Answer: C.) Horizontal sum of all the individual firm's supply curve
Explanation: A perfectly competitive market, is that in which sellers or suppliers of a certain product are numerous such that a slight increase in price, and demand could fall to 0. Here, an individual seller has no control over the price of commodities. The supply curve tells how much quantity will be produced at different prices. Therefore the market supply curve is determined by all individual sellers individual price in other to determine the overall quantity to be produced at varying market price. Prices are drawn horizontally from the y-axis to determine quantity produced at different prices for each indivudual seller which is summed to generate the market supply curve.
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Find how much time he worked overtime.
52-40=12
Find his overtime salary.
22.5*1.5=33.75
Calculate how much money he makes for 40 hours.
40*22.5=900
Calculate how much money he made in overtime.
33.75*12=405
Add both earnings together.
900+405=1305
George earned 1305$ last week.
Answer:
d. making comparisons to direct attention to why differences in costs exist across companies.
Explanation:
- A benchmark is a simple comparison or evaluation of the business processes that measure productivity and time and costs.
- Used to measure the performance using specific indicators like cost, productivity and time per unit also referred to as the best practice of increasing the performance of the company.
- It has certain stages like the selection of subjects, definition of the process, identification of potential partners and collection of data.