How do inspectors at air and seaports help protect local ecosystems? A. They make sure that scientists have proper passports.
B. They make sure that travelers don’t bring new species of plants or animals into an ecosystem.
C. They make sure that travelers are carrying plenty of water.
D. They make sure that planes and ships are on time.

The management of a private investment club has a fund of $250,000 earmarked for investment in stocks. to arrive at an acceptable overall level of risk, the stocks that management is considering have been classified into three categories: high risk (x), medium risk (y), and low risk (z). management estimates that high risk stocks will have a rate of return of 15%/year; medium risk stocks, 10%/year; and low risk stocks, 6%/year. the amount of money invested in low risk stocks is to be twice the sum of the amount invested in stocks of the other two categories. if the investment goal is to have a rate of return of 9% on the total investment, determine how much the club should invest in each type of stock. (assume that all the money available for investment is invested.)

Minneapolis federal reserve bank economist edward prescott estimates the elasticity of the u.s. labor supply to be 3. given this elasticity, what would be the impact of funding the social security program with tax increases on the number of hours worked and on the amount of taxes collected to fund social security?

Faldo corp sells on terms that allow customers 45 days to pay for merchandise. its sales last year were $325,000, and its year-end receivables were $60,000. if its dso is less than the 45-day credit period, then customers are paying on time. otherwise, they are paying late. by how much are customers paying early or late? base your answer on this equation: dso - credit period = days early or late, and use a 365-day year when calculating the dso. a positive answer indicates late payments, while a negative answer indicates early payments.a. 21.27b. 22.38c. 23.50d. 24.68e. 25.91b