## Thinking Mathematically (6th Edition)

For approximately $1,650,361$ high school teenagers, doing well in school is the most important problem.
The graph shows data for $16,503,611$ students in the United States. Out of those students, the graph shows that for $11\%$, doing well in school is the most important problem. $11\%$ is approximately $10\%$, which is $\frac{1}{10}$; therefore, without using a calculator, we can estimate: For about $16,503,611*\frac{1}{10}\approx1,650,361$ high school teenagers, doing well in school is the most important problem.