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Lesson 11.7 Certify Mode
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Consider the following word problem:
A pizzeria sells three sizes of pizza: small, medium, and large. The pizzas sell for $5, $8, and $10, respectively. One evening they sold 35 pizzas and received $198. If
they sold 22 more small than medium pizzas, how many of each size did they sell?
Use the Gaussian elimination method with back substitution to solve the given word problem.
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