A music executive is trying to determine the effect that advertising expenditures (in dollars) have on digital music sales. After gathering sales data from the previous 12 quarters, the executive finds the effect that advertising expenditures have on digital music sales can be described by the following equation:
Digital music sales = 9,500 + 0.15*(advertising expenditures)
Based on this equation, which of the statements below is correct?

Which of the following formulas in Excel would correctly calculate the mean of the data below? (Select all that apply.)

If an analyst looks at a start-up's statement of cash flows for the past three years, it is MOST likely that the analyst will find:

Which of the following measures can reduce multicollinearity in multiple regression? (Select all that apply.)

A company owns an empty office building and is deciding how to use it next year. It would cost $100,000 to staff the office and $15,000 for equipment. The revenues would be $160,000. Meanwhile, it could rent the office to another company for $75,000 in revenues. In both cases, the company must pay $5,000 for the building's electricity. If the company is seeking to maximize its economic profit, which course should it pursue and what is the outcome?