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 34 2000 3 2005 3.2 2007 1.3 Let f(t) be the number of...

Extracted 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 34 2000 3 2005 3.2 2007 1.3 Let f(t) be the number of polio cases in the world t years since 1980. Use a graphing calculator to draw a scattergram of the data. Is it better tamodel the data by using a linear or exponential model? Select an answer v Find an equation of f. Hint f(t) = Round the coefficients to 2 decimal places. The number of polio cases is Select an answer by Select an answer v per year. Predict the number of polio cases in 2018. Hint Predict in which year there will be 1 case of polio. Find the approximate half-life of the number of polio cases. Hint years Ouestion Hel