## Elementary Algebra

Published by Cengage Learning

# Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.3 - Integers: Addition and Subtraction - Problem Set 1.3 - Page 21: 125

#### Answer

Dell's stock record gained $1$ dollar for this five-day period.

#### Work Step by Step

The term "loss" indicates the subtraction of money while the term "gain" indicates the addition of money. Dell's stock lost value on Monday and Friday while it gained value on Tuesday, Wednesday, and Thursday. Gains and losses: $-2$, $+1$, $+3$, $+1$, and $-2$ Add up the losses and gains to obtain: $= (-2) + (1) + (3) + (1) + (-2)$ $= -2 + 1 + 3 + 1 -2$ $= -2 + 4 + 1 -2$ $= -2 + 5 - 2$ $= -4 + 5$ $= 1$ dollar Therefore, Dell's stock gained $1$ dollar for this five-day period.

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