â¢ Wait three to four weeks before lifting heavy objects or doing strenuous exercise. Get clearance from your doctor before very strenuous activity or manual labor. If you underwent angioplasty to stop a heart attack, your doctor may ask you to take a stress (treadmill) test three to six weeks after your procedure.
Aggregate demand, or AD, is defined as the total amount of goods and services consumers are willing to purchase in a given economy and during a given time period. Sometimes aggregate demand changes in a way that alters its relationship with aggregate supply, or AS; this is called a shift.. Since modern economists calculate aggregate demand using a specific formula, shifts result from changes in the value of the formula's input variables.
4. Savings, income taxes, and imports are leakages that determine the value of the income multiplier. VII. Aggregate Expenditures and Aggregate Demand. A. The effect of a price change on the AE schedule. 1. A higher price level lowers consumption, investment, and net exports resulting in lower aggregate expenditures. 2. Lower aggregate expenditures results in lower equilibrium output at a higher price level. This is, in fact, the aggregate demand schedule of the economy. 3. Factors other than a price change that affect aggregate expenditures result in a shift in the aggregate demand schedule.