"The Price of Long Distance Phone Calls Goes Down After

Multiple Choice

"The price of long distance phone calls goes down after 5 p.m. and falls further after 11 p.m. As a result, people make more long distance phone calls as it gets later each night." A graph showing this relationship between long distance phone rates and the number of calls made would show

A) a negatively- sloped curve.
B) an inverse relationship.
C) a positively- sloped curve.
D) Both answers A and B are correct.