#### Answer

a. a real number; greater than $r$
b. real number $r$; there exists a real number $s$

#### Work Step by Step

Note that infinity does not satisfy the property required of $s$ because infinity is not a real number.

Published by
Cengage Learning

ISBN 10:
0-49539-132-8

ISBN 13:
978-0-49539-132-6

a. a real number; greater than $r$
b. real number $r$; there exists a real number $s$

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