A large share of the world supply of diamonds comes from Russia and South Africa. Suppose that the marginal cost of mining diamonds is constant at $2,000 per diamond, and the demand for diamonds is described by the following schedule: Price Quantity
(Dollars) (Diamonds)
8,000 2,000
7,000 3,000
6,000 4,000
5,000 5,000
4,000 6,000
3,000 7,000
2,000 8,000
1,000 9,000

If there were many suppliers of diamonds, the price would be per diamond and the quantity sold would be diamonds. If there were only one supplier of diamonds, the price would be per diamond and the quantity sold would be diamonds. Suppose Russia and South Africa form a cartel. In this case, the price would be per diamond and the total quantity sold would be diamonds. If the countries split the market evenly, South Africa would produce diamonds and earn a profit of .

If South Africa increased its production by 1,000 diamonds while Russia stuck to the cartel agreement, South Africa's profit would to .

Following is a list of various costs incurred in producing replacement automobile parts. with respect to the production and sale of these auto parts, classify each cost as either variable costs, fixed costs, or mixed costs. 1. oil used in manufacturing equipment 2. plastic 3. property taxes, $165,000 per year on factory building and equipment 4. salary of plant manager 5. cost of labor for hourly workers 6. packaging 7. factory cleaning costs, $6,000 per month 8. metal 9. rent on warehouse, $10,000 per month plus $25 per square foot of storage used 10. property insurance premiums, $3,600 per month plus $0.01 for each dollar of property over $1,200,000 11. straight-line depreciation on the production equipment 12. hourly wages of machine operators 13. electricity costs, $0.20 per kilowatt-hour 14. computer chip (purchased from a vendor) 15. pension cost, $1.00 per employee hour on the job

Recently, verizon wireless ran a pricing trial in order to estimate the elasticity of demand for its services. the manager selected three states that were representative of its entire service area and increased prices by 5 percent to customers in those areas. one week later, the number of customers enrolled in verizon's cellular plans declined 4 percent in those states, while enrollments in states where prices were not increased remained flat. the manager used this information to estimate the own-price elasticity of demand and, based on her findings, immediately increased prices in all market areas by 5 percent in an attempt to boost the company's 2016 annual revenues. one year later, the manager was perplexed because verizon's 2016 annual revenues were 10 percent lower than those in 2015"the price increase apparently led to a reduction in the company's revenues. did the manager make an error? yes - the one-week measures show demand is inelastic, so a price increase will decrease revenues. yes - the one-week measures show demand is elastic, so a price increase will reduce revenues. yes - cell phone elasticity is likely much larger in the long-run than the short-run. no - the cell phone market must have changed between 2011 and 2012 for this price increase to lower revenues.

Dollar shave club is an ecommerce start-up that delivers razors to its subscribers by mail. by doing this, dollar shave club is using a(n) to disrupt an existing market.a. innovation ecosystem b. architectural innovation c. business model innovation d. incremental innovation