Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - 1-4 Properties of Real Numbers - Lesson Check: 3


The total cost is $4.45.

Work Step by Step

We represent this word problem as an expression: $2.95+.45+1.05$ This shows us the sum of the costs, which gives us the total cost. First, we use the commutative property to change the order: $2.95+1.05+.45$ Next, we use the associative property to add grouping: $(2.95+1.05)+0.45$ Next, we follow the order of operations to simplify the expression. The order of operations states that first we perform operations inside grouping symbols, such as parentheses, brackets, and fraction bars. Then, we simplify powers. Then, we multiply and divide from left to right. We simplify inside the parentheses: $4.00+0.45$ Finally, we add: $4.45$ The total cost is $4.45
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