General Cereals is using a regression model to estimate the demand for Tweetie Sweeties, a whistle-shaped, sugar-coated breakfast cereal for children. The following (multiplicative exponential) demand function is being used:

Q_D=6,280P ^(1.35) _A^1.75 N^3.70

QD=6,280P1.35 A1.75 N3.70

where

Q_DQD= quantity demanded, in 10-oz boxes

PP= price per box, in dollars

AA= advertising expenditures on daytime television, in dollars

NN= proportion of the population under 12 years old, in percent

a. What is the point price elasticity of demand for Tweetie Sweeties?

3.70

1.75

-1.35

-0.77

b. What is the advertising elasticity of demand?

-1.35

3.70

0.47

1.75

c. According to the estimated model, a percent increase in the proportion of the population under 12 years old ____the quantity demanded by____ percent.