As cell phones proliferate, the number of pay phones continues to drop. The number of pay phones from 2004 through 2009 (in millions) are shown in the following table (x = 0 corresponds to 2004). Year, x 0 1 2 3 4 5 Number of Pay Phones, y 1.30 1.15 1.00 0.84 0.69 0.56 (b) Derive an equation for the line L. (c) Using the equation in part (b), estimate the number of pay phones in 2011.
As cell phones proliferate, the number of pay phones continues to drop. The number of pay phones from 2004 through 2009 (in millions) are shown in the following table (x = 0 corresponds to 2004). Year, x 0 1 2 3 4 5 Number of Pay Phones, y 1.30 1.15 1.00 0.84 0.69 0.56 (b) Derive an equation for the line L. (c) Using the equation in part (b), estimate the number of pay phones in 2011.
Chapter7: Rational Expressions And Functions
Section7.5: Solve Applications With Rational Equations
Problem 338E: Make up an example from your life experience of inverse variation.
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As cell phones proliferate, the number of pay phones continues to drop. The number of pay phones from 2004 through 2009 (in millions) are shown in the following table
(x = 0 corresponds to 2004).
| Year, x | 0 | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
| Number of Pay Phones, y | 1.30 | 1.15 | 1.00 | 0.84 | 0.69 | 0.56 |
(b) Derive an equation for the line L.
(c) Using the equation in part (b), estimate the number of pay phones in 2011.
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