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The graph shows the average monthly cellular phone bill since 1987. The slope of the curve at point A is -0.23. Average bill (dollars) 99 27 Year 1990 1993 1996 1999 2001 (a) What should be the units on the slope at point A? O years O dollars O years per dollar O dollars per year (b) How rapidly was the dollar amount growing in 1993? O The dollar amount was not growing. The dollar amount was increasing by $0.23 per year. The dollar amount was decreasing by $0.23 per year. O cannot be determined (c) What is the slope of the tangent line at point A? ---Select--- (d) What is the instantaneous rate of change of the amount at point A? ---Select---

The graph shows the average monthly cellular phone bill since 1987. The slope of the curve at point A is -0.23. Average bill (dollars) 99 27 Year 1990 1993 1996 1999 2001 (a) What should be the units on the slope at point A? O years O dollars O years per dollar O dollars per year (b) How rapidly was the dollar amount growing in 1993? O The dollar amount was not growing. The dollar amount was increasing by $0.23 per year. The dollar amount was decreasing by $0.23 per year. O cannot be determined (c) What is the slope of the tangent line at point A? ---Select--- (d) What is the instantaneous rate of change of the amount at point A? ---Select---

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter3: The Derivative
Section3.CR: Chapter 3 Review
Problem 67CR
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The graph shows the average monthly cellular phone bill since 1987. The slope of the curve at point A is -0.23. Average bill (dollars) 99 27 1990 1993 1996 1999 2001 (a) What should be the units on the slope at point A? O years dollars years per dollar O dollars per year Year (b) How rapidly was the dollar amount growing in 1993? O The dollar amount was not growing. O The dollar amount was increasing by $0.23 per year. The dollar amount was decreasing by $0.23 per year. cannot be determined (c) What is the slope of the tangent line at point A? ---Select--- (d) What is the instantaneous rate of change of the amount at point A? ---Select---
Transcribed Image Text:The graph shows the average monthly cellular phone bill since 1987. The slope of the curve at point A is -0.23. Average bill (dollars) 99 27 1990 1993 1996 1999 2001 (a) What should be the units on the slope at point A? O years dollars years per dollar O dollars per year Year (b) How rapidly was the dollar amount growing in 1993? O The dollar amount was not growing. O The dollar amount was increasing by $0.23 per year. The dollar amount was decreasing by $0.23 per year. cannot be determined (c) What is the slope of the tangent line at point A? ---Select--- (d) What is the instantaneous rate of change of the amount at point A? ---Select---
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