The price per mp3 download 5 years ago was $0.99. Now, each mp3 download costs $1.29. Which statement is true?
A
The average change in the price per mp3 download was an increase of $0.06 per year because−0.3/5=−0.06.
B
The average change in the price per mp3 download was a decrease of $0.06 per year because −0.3/5 = −0.06
C
The average change in the price per mp3 download was an increase of $0.06 per year because 0.3/5 = 0.06.
D
The average change in the price per mp3 download was a decrease of $0.06 per year because 0.3/5 = 0.06.
