Assume that you had estimated the following cubic regression model stack t e s t space s c o r e with hat on top equals space 600.1 plus 5.02 i n c minus.096 i n c squared plus.00069 i n c cubed, if income increased from 15 to 16 ($15,000 to $16,000), then the predicted effect on test scores would be

Demand increases by less than supply increases. as a result, (a) equilibrium price will decline and equilibrium quantity will rise. (b) both equilibrium price and quantity will decline. (c) both equilibrium price and quantity will rise

Which of the following describes one of the ways that the demographics of an area affect the price of housing in that area? a. when more people have children, their incomes tend to be higher and the housing prices are also higher. b. older people are more likely to stay in their houses, creating a seller's market that keeps prices low. c. an area with a lower population density won't have enough construction workers to build new houses quickly. d. an area with younger people will have a higher demand for rentals and a lower demand for buying.

Sports leave thousands of college athletes with little time for their studies. this is an example of