Concept explainers
Application Exercises
The graphs show the percentage of high school seniors who had ever used alcohol or marijuana.
The data can be described by the following mathematical models:
Using this information to solve Exercises 55-56.
a. Use the appropriate line graph to estimate the percentage of seniors who used marijuana in 2010.
b. Use the appropriate formula to determine the percentage of seniors who used marijuana in 2010. How does this compare with your estimate in part (a)?
c. Use the appropriate line graph to estimate the percentage of seniors who used alcohol in 2010.
d. Use the appropriate formula to determine the percentage of seniors who used alcohol in 2010. How does this compare with your estimate in part (c)?
e. For the period from 1990 through 2014, in which year was marijuana use by seniors at a maximum? Estimate the percentage of seniors who used marijuana in that year.
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MyLab Math with Pearson eText -- Standalone Access Card -- for Precalculus (6th Edition)
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