"Steel Rolling Corp. purchased a mine, which holds an estimated 39,000 tons of iron ore, on January 1, 2017, for $522,000. The mine is expected to have zero residual value. The business extracted and sold 17,500 tons of ore in 2017 and 15,800 tons of ore in 2018. What is the depletion expense for 2017?"

You wish to buy a cabin in 15 years. today, the cabin costs $150,000. you believe the price of the cabin will inflate at 4% annually. you want to invest a single amount of money (lump sum) today and have the money grow to equal the future purchase price of the cabin 15 years from now. if you can earn 10% annually on your investments, how much do you need to invest now, in order to be able to purchase the cabin?

As a group is leaving, you ask them if they had a good experience at the restaurant. they mention that they had poor service and their food was cold. a.apologize and ask them to give the restaurant another chance in the future. you tell them that guests usually have a great experience here. b.apologize then ask for the server’s name and immediately notify the manager after they leave. c.apologize for the bad experience and ask them to wait as you call the manager to talk to them. d.apologize for the bad experience and encourage them to complete the customer service survey. this feedback will ensure other guests do not have the same experience.

Acompany is developing a new high­performance wax for cross country ski racing. in order to justify the price marketingwants, the wax needs to be very fast. specifically, the mean time to finish their standard test course should be less thanseconds for a former olympic champion. to test it, the champion will ski the course 8 times. the champion's times(selected at random) are 59.9 61.9 48.8 52.2 46.6 45.3 50.6 and 41.1 seconds to complete the test course. complete parts a and b below.a) should they market the wax? assume the assumptions and conditions for appropriate hypothesis testing are metfor the sample.assume=0.05. what are the null and alternative hypotheses? choose the correct answer below.b) suppose they decide not to market the wax after the test, but it turns out that the wax really does lower the champion'saverage time to less thanseconds. what kind of error have they made? explain the impact to the company of such anerror.