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Chapter 8: Problem 89
What is the common ratio in a geometric sequence?
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In the sequence \(21,700,23,172,24,644,26,116, \dots,\) which term is \(314,628 ?\)
The bar graphs show changes in educational attainment for Americans ages 25 and older from 1970 to 2007 . Exercises \(61-62\) involve developing arithmetic sequences that model the data. (GRAPH CANT COPY) In \(1970,55.2 \%\) of Americans ages 25 and older had completed four years of high school or more. On average, this percentage has increased by approximately 0.86 each year. a. Write a formula for the \(n\) th term of the arithmetic sequence that models the percentage of Americans ages 25 and older who had or will have completed four years of high school or more \(n\) years after 1969 . b. Use the model from part (a) to project the percentage of Americans ages 25 and older who will have completed four years of high school or more by 2019 .
Explain how to find or probabilities with events that are not mutually exclusive. Give an example.
Exercises \(95-97\) will help you prepare for the material covered in the next section. The figure shows that when a die is rolled, there are six equally likely outcomes: \(1,2,3,4,5,\) or \(6 .\) Use this information to solve each exercise. (image can't copy) What fraction of the outcomes is less than \(5 ?\)
Use the formula \(a_{n}-4+(n-1)(-7)\) to find the eighth term of the sequence \(4,-3,-10, \ldots\)
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