To model the situation with two equations, we can define variables for our equations:
- Let \( x \) represent the number of shirts sold.
- Let \( y \) represent the total cost (or revenue).
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For the total cost incurred by the team to produce the shirts:
- The fixed cost for printing design and setup is $100, and the variable cost is $10 per shirt. Hence, the equation representing the total cost is: \[ y = 10x + 100 \]
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For the total revenue generated by selling the shirts:
- The team sells each shirt for $15, so as they sell \( x \) shirts, the total revenue generated is: \[ y = 15x \]
Thus, the two equations that model this situation are:
- Total cost: \( y = 10x + 100 \)
- Total revenue: \( y = 15x \)
So, the correct answer is:
- \( y = 10x + 100 \)
- \( y = 15x \)