Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 7 - Section 7.1 - Simplifying Rational Expressions - Practice: 8


a) 350 dollars b) 260 dollars c) It decreases due to the denominator increasing

Work Step by Step

a) As we've been told the value for x (number of fax machines manufactured) is 100, you simply substitute 100 in for every x. C=$\frac{250(100) + 10,000}{(100)}$ b) New value for x is 1000, you simply substitute 1000 in for every x. C=$\frac{250(1000) + 10,000}{(1000)}$ c) As you increase x, you increase the numerator but you also increase the denominator. Because you increase the denominator, it means you divide by a bigger number. The larger the number you divide by, the smaller the result will be.
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