Problem

See Examples 1, 2, 4 , and 5 as you do Exercise 49.The price of KeyCorp stock can be appro...

See Examples 1, 2, 4 , and 5 as you do Exercise 49.

The price of KeyCorp stock can be approximated by the function

where x represents the number of trading days past September 14, 2012.

(a) Graph f(x).


(b) What is the lowest stock price during the period defined by f(x)?

Example 1

Graph the following function:

Example 2

Graph the function

Example 3

Figure 3.12, on the following page, shows the median sales prices (in thousands of dollars) of new privately owned one−family houses by region of the United States (northeast, midwest, south, and west) from the years 2005 to 2011.

 

Example 4

Figure 3.13 is the graph of the function f whose rule is f(x) = average interest rate on a 30−year fixed−rate mortgage for a new home in year x.

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