Write a system of linear equations in three variables, and then use matrices to solve the system.A ceramics workshop makes wreaths, trees, and sleighs for sale at Christmas. A wreath takes 3 hours to prepare, 2 hours to paint, and 10 hours to fire. A tree takes 16 hours to prepare, 3 hours to paint, and 4 hours to fire. A sleigh takes 4 hours to prepare, 14 hours to paint, and 7 hours to fire. If the workshop has 117 hours for prep time, 85 hours for painting, and 118 hours for firing, how many of each can be made?
A. 7 wreaths; 5 trees; 4 sleighs
B. 8 wreaths; 6 trees; 5 sleighs
C. 5 wreaths; 4 trees; 7 sleighs
D. 4 wreaths; 7 trees; 5 sleighs
Answer: A
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A. 
B. 
C. 
D. 
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