To model the situation with the Lakewood baseball team selling T-shirts, we can create two equations: one for the cost and one for the revenue from selling the T-shirts.
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Cost Equation: Let \( x \) represent the number of T-shirts sold. The total cost \( y \) to produce \( x \) T-shirts can be expressed as: \[ y = 10x + 100 \] (Here, $100 is the fixed cost for printing design and setup, and $10 per shirt is the variable cost.)
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Revenue Equation: The revenue \( y \) from selling \( x \) T-shirts at $15 each can be expressed as: \[ y = 15x \]
So, the equations that model this situation are:
- Cost: \( y = 10x + 100 \)
- Revenue: \( y = 15x \)
Thus, the correct equations are:
- \( y = 10x + 100 \) (Cost)
- \( y = 15x \) (Revenue)