Economics is best defined as the study of how individuals decide to use limited resources in an attempt to satisfy unlimited wants

Which of the following is likely to increase the equilibrium real interest rate?

a. greater tax benefits for IRAs b. technological improvement creating profitable investment opportunities c. elimination of an investment tax credit for corporations d. an increased consumption tax

Describe the idea behind the cap-and-trade program for improving environmental quality. Explain how supply and demand determine the price for pollution rights in this case

Please provide the best answer for the statement.