6th Edition

ISBN: 9781323795323

Author: Blitzer

Publisher: PEARSON

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The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.

Speed, Time, and Distance

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Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experime…

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Textbook Question

Chapter 8.4, Problem 63E

Between 1990 and 2013, there was a drop in violent crime and a spike in the prison population m the United States. The bar graph shows the number of violent crimes per 100,000 people and the number of imprisonments per 100,000 people for six selected years from 1990 through 2013.

Chapter 8.4, Problem 63E, Between 1990 and 2013, there was a drop in violent crime and a spike in the prison population m the

a. Based on the information in the graph, it appears that there was a year when the number of violent crimes per 100.000 Americans was the same as the number of imprisonments

per 100,000 Americans. According to the graph, between which two years did this occur?

b. The data can be modeled by quadratic and linear functions

$$$ y = 0.6 x 2 − 28 x + 730

$$$ − 15 x + y = 300

In each function, r represents the number of years after 1990 and y represents the number per 100,000 Americans. Solve a nonlinear system to determine the year described in part (a). Bound to the nearest year. How main violent crimes per 100,000 Americans and how many imprisonments per 100,000 Americans were there in that year?

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Chapter 8.4, Problem 62E

Chapter 8.4, Problem 64E

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Chapter 8 Solutions

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Solution Summary: The graph shows that the number of violent crimes per 100,000 Americans was equal to that of imprisonments per 1000,000 people between 1990 and 2005.

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