The following table shows the median number of hours of leisure time that Americans had each week in various years.


Median Number of Leisure Hours Per Week

1973, 0


1980, 7


1987, 14


1993, 20


1997, 24


Source: Louis Harris and Associates

(a) Make a scatterplot of the data, letting xrepresent the number of years since 1973, and determine which model best fits the data.

(b) Use a graphing calculator to fit the type of function determined in part (a) to the data.

(c) Graph the equation with the scatterplot. Then, use the function found in part (b) to estimate the number of leisure hours per week in 1978,1990, and 2005.

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