To derive the demand curve for good X, all the following are constant EXCEPT

According to the "Rule of 70," it will take 4 years for real GDP per capita to double when the growth rate of real GDP per capita is

A) 4 percent. B) 12.25 percent. C) 17.5 percent. D) 28 percent.

A leftward shift of a product supply curve might be caused by

A. an improvement in the relevant technique of production. B. some firms leaving the industry. C. a decline in the prices of needed inputs. D. an increase in consumer incomes.