# Chapter 1 - Problem Solving and Critical Thinking - 1.2 Estimation, Graphs, and Mathematical Models - Exercise Set 1.2 - Page 27: 43

For approximately $1,650,361$ high school teenagers, doing well in school is the most important problem.

#### Work Step by Step

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.

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