The numbers of polio cases in the world are shown in the table for various years. Year Number of Polio Cases (thousands) 1988 350 1992 138 1996 31 2000 2005 3.2 2007 1.3

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 93E
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The numbers of polio cases in the world are shown in the
table for various years.
Year
Number of Polio Cases (thousands)
1988
350
1992
138
1996
31
2000
6
2005
3.2
2007
1.3
Let f(t) be the number of polio cases in thousands t years
since 1980.
Use a graphing calculator to draw a scattergram of the data.
Is it better to model the data by using a linear or
exponential model? | Select an answer
Find an equation of f. Hint
f(t)
Round the
coefficients to 4 decimal places.
The number of polio cases is | Select an answer
by
Select an answer
per year.
Predict the number of polio cases in 2013.
Hint
Predict in which year there will be 1 case of polio. Hint
Find the approximate half-life of the number of polio cases.
Hint
years
Transcribed Image Text:The numbers of polio cases in the world are shown in the table for various years. Year Number of Polio Cases (thousands) 1988 350 1992 138 1996 31 2000 6 2005 3.2 2007 1.3 Let f(t) be the number of polio cases in thousands t years since 1980. Use a graphing calculator to draw a scattergram of the data. Is it better to model the data by using a linear or exponential model? | Select an answer Find an equation of f. Hint f(t) Round the coefficients to 4 decimal places. The number of polio cases is | Select an answer by Select an answer per year. Predict the number of polio cases in 2013. Hint Predict in which year there will be 1 case of polio. Hint Find the approximate half-life of the number of polio cases. Hint years
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