To determine the number of pizza slices and sodas sold, we can set up the equations needed to solve the problem based on the provided information.
Let:
- \( P \) = number of pizza slices sold
- \( S \) = number of sodas sold
From the problem statement, we can derive the following equations:
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The total revenue from selling the pizza slices and sodas: \[ 3.50P + 1.50S = 800 \]
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The total number of items sold (pizza slices and sodas combined): \[ P + S = 344 \]
Therefore, the correct answer is: 3.50P + 1.50S = 800 and P + S = 344.