c. both the slope and price elasticity of demand are undefined.
d. both the slope and price elasticity of demand are equal to 0.
Max and Maddy charge people to park on their lawn while attending a nearby craft fair.
At the current price of $10, seven people park on their lawn. If they raise the price to
$15, they know that only five people will want to park on their lawn. Whether they have
seven or five cars parked on their lawn does not affect their costs. From this information
it follows that
a. they should leave the price at $10.
b. it does not matter if they charge $10 or $15.
c. they would do better charging $15 than $10.
d. they should raise the price even more.
Danita rescues dogs from her local animal shelter. When Danita’s income rises by 7
percent, her quantity demanded of dog biscuits increases by 12 percent. For Danita, the
income elasticity of demand for dog biscuits is
a. negative, and dog biscuits are a normal good.
b. negative, and dog biscuits are an inferior good.