The percent of 10th grade students who have smoked frequently in the last 30 days has greatly decreased, from 16.3% in 1995 to 8.3% in 2004. (a) Find the average rate of change over the 9 year period in the percent of 10th grade students who have smoked frequently in the last 30 days. (b) Use this data to make a linear model predicting the number % of 10th graders who smoked frequently in the past 30 days for a given year. (c) Use this model to make an estimate for the % of 10th grade students who smoked frequently in the past 30 days in 2010.
10. The percent of 10th grade students who have smoked frequently in the last 30 days has greatly decreased, from 16.3% in 1995 to 8.3% in 2004.
(a) Find the average rate of change over the 9 year period in the percent of 10th grade students who have smoked frequently in the last 30 days.
(b) Use this data to make a linear model predicting the number % of 10th graders who smoked frequently in the past 30 days for a given year.
(c) Use this model to make an estimate for the % of 10th grade students who smoked frequently in the past 30 days in 2010.
(d) Use this model to make an estimate for the % of 10th grade students who smoked frequently in the past 30 days in 2015. Is this a good estimate for 2015? Explain:
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