If a variable other than the price level changes, the AD curve shifts

Provide examples of goods or services whose elasticities of supply are (a) zero, (b) greater than zero but less than infinity, and (c) infinity

What will be an ideal response?

The official poverty rate in the United States includes

A. over 35 percent of the population. B. between 20 to 25 percent of the population. C. between 10 and 15 percent of the population. D. less than 5 percent of the population.