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  3. 15 grades the bar graph in figure 27 shows the...

Question: 15 grades the bar graph in figure 27 shows the...

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15. Grades. The bar graph in Figure 2.7 shows the percentage of college freshmen in the United States, as of the fall of th given year, whose average grade in high school was an A-, an A, or an A+. 60 50 45 S 35 5 30 2 25 20 15 10 1985 1990 1995 2000 2005 2010 2015 Year FIGURE 2.7 Freshmen with high school grades of A. a. Describe in general how the percentage changed over time. b. Find the average yearly growth rate in the percentage from 2010 to 2015. Round your answer to the nearest whole number c. Estimate the percentage in the year 2012. Round your answer to the nearest whole number. d. The actual percentage in 2012 was 49.5%. Compare this with your answer to part c. What does this say about how the rate of growth in the percentage varied from 2010 to 2015?
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