Need some help with these economic questions, thanks!

Which of the following explain why the aggregate demand (AD) curve is downward sloping? Check all that apply. O The real balances effect O The income effect O The interest-rate effect O The net exports effect Although the AD and market demand curves are both downward sloping, the two concepts are different because the AD curve deals with prices and a 7, while the market demand curve deals with prices and aClassical eoonomists believed that an economy v selfadjust and return to longrun equilibrium because wages and prices are V , resulting in markets V overtime. For each scenario in the following table, indicate whether the aggregate demand curve will shift left or right or will not shift. Scenario Shift Consumers expect an economic downturn. .S. president is elected, and the profit expectations of business executives A new Urise. The federal government increases spending for highways, bridges, and other infrastructure. The United States increases exports of wheat and other crops to Russia, Ukraine, and other former Soviet republics