Practice!

Sample Problem

Use the Midpoint Formula to estimate the sales of Lulu’s Calculators, Inc. in 2008, given the sales in 2006 and 2010. Assume that Lulu’s Calculators, Inc. sales always follow a linear pattern.

 

Year

Sales (in millions)

2006

33

2010

47

 

millions

 

Solution

Midpoint formula:

Therefore, the sales in 2008 should be around 40 millions.