# Chapter 1 - Problem Solving and Critical Thinking - 1.2 Estimation, Graphs, and Mathematical Models - Exercise Set 1.2 - Page 27: 45

a. 85 b. 5325

#### Work Step by Step

a. The green bar in the graph for the word weird looks to be right in the middle between the dotted lines extending from the points $80$ and $90$; therefore we can estimate that $85$ people per $100$ spell weird correctly. b. For the word inoculate, we can see that the blue graph is a little bit to the left from the center between $20$ and $30$, but covers more than a third of the space; therefore we can say that its value is approximately $24$. If $85$ in $100$ spell weird correctly, and $24$ in $100$ spell inoculate correctly, then in $100$ people, there are: $85 – 24 = 61$ more people who spell weird correctly than there are people who spell inoculate correctly. In a group consisting of $8729$, with that ratio, there's going to be: $8729*\frac{61}{100}\approx5325$ more people who spell weird correctly than there are people who spell inoculate correctly.

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