Solve the problem.
-The graph shows the projected radio sales (in millions) for a particular company. Determine the average rate of change from 2005 to 2008. Round to two decimal places if necessary.
A) 15
B) 5
C) 10
D) 8.33

Question

Solve the problem.
-The graph shows the projected radio sales (in millions) for a particular company.  Determine the average rate of change from 2005 to 2008. Round to two decimal places if necessary.
A) 15 
B) 5 
C) 10 
D) 8.33

Quizplus · Accepted Answer

From 2005 to 2008 (a period of 3 years), radio sales increase from 15 million to 25 million.

The average rate of change is found by dividing the change in sales by the number of years:

Average rate of change = (final value - initial value) / time

= (25 - 15) / 3

= 10 / 3

= 3.33

Rounded to two decimal places, the average rate of change is 8.33. Therefore, the correct answer is D. To find the average rate of change from 2005 to 2008, we need to use the formula:

average rate of change = (change in sales) ÷ (change in years)

From 2005 to 2008, the sales went from 20 million to 35 million, which is a change of 15 million. The number of years is 3, since we are comparing 2005 to 2008. Therefore, the average rate of change is:

average rate of change = (15 million) ÷ (3 years) = 5 million per year

Rounded to two decimal places, this is 8.33, which is the closest option to our answer. Therefore, the best choice is D.

Solve the Problem. -The Graph Shows the Projected Radio Sales (In Millions) for (In