Look at the bar graph below. Then, answer the questions.
1. Which group had the greatest decrease in drug use between 1997 and 2002?
a. 8th-graders
b. 10th-graders
c. 12th-graders
2. Which group had the smallest decrease in drug use between 1997 and 2002?
a. 8th-graders
b. 10th-graders
c. 12th-graders
3. In 1997, what was the difference between illicit drug use among 8th-graders and 10th-graders?
a. 18.6 percent
b. 8.4 percent
c. 13.4 percent
4. In 2002, what was the difference between illicit drug use among 10th-graders and 12th-graders?
a. 2.4 percent
b. 3.2 percent
c. 4.6 percent
5. What percentage of 8th-graders did not use illicit drugs in 2002?
a. 10.4 percent
b. 89.6 percent
c. 96.4 percent
6. If the trend were to continue, what percentage of 12th-graders would report using drugs in 2007?
a. 23.2 percent
b. 27 percent
c. 24.6 percent
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