Concept explainers
To write: an expression for the total cost of buying 4 DVDs and 7 CDs.
Answer to Problem 4CYP
The algebraic expression for the given problem is
The cost of buying 4 DVDs and 7 CDs is
Explanation of Solution
Given:
Cost of DVD = $5
Cost of CD = $3
Calculation:
Assign variables for the unknown values. Let d be the number of DVDs and c be the number of CDs.
The algebraic expression for the given problem is:
Using the given algebraic expression determine the total cost to buy some DVDs and CDs.
Conclusion:
The algebraic expression for the given problem is
The cost of buying 4 DVDs and 7 CDs is
Chapter 1 Solutions
Pre-Algebra, Student Edition
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