Consider the supply-and-demand framework for risky jobs. The technological progress over the course of the 20th century led to two developments: (1) It became easier for firms to offer a safe work environment; and (2) the wealth of workers rose. How would this affect the equilibrium relative wage of risky jobs LaTeX: \frac{w_{RISKY}}{w_{SAFE}}w R I S K Y w S A F Eand the relative number of individuals employed in risky jobs, LaTeX: \frac{N_{RISKY}}{N_{SAFE}}N R I S K Y N S A F E?

Which of the following best explains how the invention of money affected the barter system? a. the invention of money supplemented the barter system by providing a nonperishable medium of exchange b. the invention of money completely replaced the barter system with a free-market system c. the invention of money had no effect on the barter system d. the invention of money drastically reduced the value of goods used in the barter system 2b2t

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.)

What cylinder head operation is the technician performing in this figure?