In: Advanced Math
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 | 30 |
2000 | 6 |
2005 | 3.2 |
2007 | 1.3 |
Let f(t)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 Exponential Linear
Find an equation of f. Hint
f(t)=f(t)= Round the coefficients to 4
decimal places.
The number of polio cases is Select an answer decreasing
increasing by Select an answer 25.55% 368665.63%
3686.6563% 74.45% per year.
Predict the number of polio cases in 2014.
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