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Concept explainers
To Find: The cost of each item on her order is using augmented matrices.
![Check Mark](/static/check-mark.png)
Answer to Problem 81SR
Cost of batteries is
Cost of spark plugs
Cost of wiper blades
Explanation of Solution
Given: Shandra is inventory manager for a local repair shop. She ordered
The augmented matrix representing the situation is
Now
Using the graphing calculator to solve the system
KEYSTROKES:
Now
The matrix is
Thus
Cost of batteries is
Cost of spark plugs
Cost of wiper blades
Chapter 7 Solutions
Glencoe Algebra 2 Student Edition C2014
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