The Average Lengths L of Cellular Phone Calls in Minutes

question 59

Multiple Choice

The average lengths L of cellular phone calls in minutes from 1999 to 2004 are shown in the table below. Use the regression feature of a graphing utility to find a linear model for the data. Let t represent the year, with t = 9 corresponding to 1999. Use the model to predict the average lengths of cellular phone calls for the year 2012. Round your answer to two decimal places.

• A)5.00 minutes
• B)8.00 minutes
• C)4.00 minutes
• D)2.00 minutes
• E)3.00 minutes

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