To model the situation, we need to define what each variable represents:
- Let \( x \) be the number of T-shirts sold.
- Let \( y \) represent the total cost or revenue.
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Cost Equation: To find the total cost for the shirts, we have a fixed cost of $100 for printing and setup, plus $10 for each shirt. This can be represented as: \[ y = 10x + 100 \]
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Revenue Equation: To find out the revenue generated from selling the shirts, the team sells each shirt for $15. The revenue can be represented as: \[ y = 15x \]
Thus, the two equations that model this situation are:
- \( y = 10x + 100 \) (Cost Equation)
- \( y = 15x \) (Revenue Equation)