To model the situation with two equations, we can define the variables:
- Let \( x \) be the number of shirts sold.
- Let \( y \) be the total cost or total revenue.
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Cost Equation: This equation models the total cost incurred by the team to produce the shirts. There is a fixed cost of $100 for printing design and setup, and a variable cost of $10 per shirt. Thus, the total cost \( y \) can be represented by the equation: \[ y = 10x + 100 \]
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Revenue Equation: This equation models the total revenue generated from selling the shirts. The shirts are sold for $15 each, so the total revenue \( y \) when \( x \) shirts are sold can be expressed by the equation: \[ y = 15x \]
So the two equations are:
- \( y = 10x + 100 \) (total cost).
- \( y = 15x \) (total revenue).
The correct responses are:
- \( y = 10x + 100 \)
- \( y = 15x \)