The percentages of osteopathic doctors who are women are shown in Table 23 for various years.

Let p be the percentage of osteopathic doctors who are women at t years since 1980.
a. Construct a scatterplot.
b. Graph the model p = 0.89t + 4.92 on the scatterplot. Does it come close to most of the data points?
c. What is the slope? What does it mean in this situation?
d. Determine the years when more than 30% of osteopathic doctors were women.

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Table 23 Percentages of Osteopathic Doctors Who Are Women Year Percent 1985 1990 1995 2000 2005 2010 2013 9.7 13.9 17.9 22.8 26.7 32.0 34.6