If the price level increased from 120 to 144, then what was the inflation rate?

Personalized advertising that uses postal mailings, phone calls, and e-mail messages is known as

A) direct marketing. B) mass marketing. C) indirect marketing. D) interactive marketing.

Which of the following does not reflect a positive rate of time preference?

a. Concert-goers yell and scream when the stage is still dark an hour after the concert was scheduled to start. b. Borrowers have to pay interest on loans. c. A dieter, allowed three ounces of butter per day, spends the whole allotment on her toast at breakfast. d. A dieter, allowed three ounces of butter per day, promises himself some new clothes if he can break the habit of spending the whole allotment on his toast at breakfast. e. A student stays up late every night for a week to finish her term paper two months before it is due.