4.1.1 Matrices and Data − Worksheet (continued)
Example 3: 6. The table shows prices for three types of clothing. Use a scalar product to find the price with 8.25% sales tax on each item.
Cost of Athletic Clothing ($) Plain Team Logo
Individualized
T-shirt Shorts
9.00 13.00 6.00 9.50
14.00 11.00 23.00
Jogging Pants 15.00 21.00
Example 4: Use the following matrices for Exercises 7-10. Evaluate, if possible.
−
1 1 6 4 0 1 1 2 1
− 0 4 1 0 2 1
1 3 3 1 2 0
A
B
C
=
=
=
−
8. C 1 2
7. 3 B
9. A − 2 B
10. 2 C − A
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