Q. 112 - Precalculus Enhanced with Graphing Utilities

Question

Net Sales The figure illustrates how net sales of Wal-Mart Stores, Inc., have grown from 2006 through 2010. Use the midpoint formula to estimate the net sales of Wal-Mart

Stores, Inc., in 2008. How does your result compare to the reported value of $374 billion?

Step-by-Step Solution

Answer

The net sales in 2008 is $\$357$ which is less than expected $374.

Step 1. Given Information

The figure illustrates how net sales of Wal-Mart Stores, Inc., have grown from 2006 through 2010. Use the midpoint formula to estimate the net sales of Wal-Mart

Stores, Inc., in 2008.

Step 2. Making ordered pair

The ordered pair that represents for the net sale with respect to the year recorded is

$\left(x,y\right)=\left(Year, Net sales\right)$

Step 3. Finding ordered pair

In 2006, Net sales is 309 and in 2010, net sales is 405.

The ordered pairs are $\left(2006,309\right) and \left(2010,405\right)$

Step 4. Finding midpoint

$$\begin{gathered} =\left(\frac{2006+2010}{2},\frac{309+405}{2}\right) \\ =\left(2008,357\right) \end{gathered}$$