## Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole

# Chapter 1 - Section 1.1 - Real Numbers - 1.1 Exercises: 67

a. 100 b. 73

#### Work Step by Step

a. $\mid$100$\mid$ Since 100 is greater than 0, the absolute value is positive. $\mid$100$\mid$ = 100 b.$\mid$-73$\mid$ Since -73 is less than 0, we multiply it by a -1 $\mid$-73$\mid$ = -(-73) = 73

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