In 2005, MusicMart sold 14,550 CDs. In 2010, they sold 12,000 CDs. What is the rate of change in the number of CDs sold? A) -2550 per yr B) -510 per yr C) -425 D) -2400 per yr

B) -510 per yr

Step-by-step explanation:

2005 = 14,550 CDs sold

2010 = 12,000 CDs sold

Difference in years = 2010 - 2005

= 5 years

Difference in CDs sold = 12,000 - 14,550

= - 4,550

Rate of change in the number of CDs sold = change in the number of CDs / change in years

= -4,550 / 5

= -510 per year

The correct answer is B) -510 per yr

answer: i would say b

step-by-step explanation:

with the way the question is worded, i believe b is the answer

the cost of the apple depends on the weight