To determine which combinations of books (\( x \)) and magazines (\( y \)) the bookstore can order, we need to analyze the inequalities given:
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Budget constraint: \[ 15x + 5y \leq 1000 \]
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Space constraint: \[ 2x + y \leq 50 \]
We'll check each combination provided:
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50 books and 0 magazines (\( x = 50, y = 0 \)):
- Budget: \( 15(50) + 5(0) = 750 \) (satisfies budget)
- Space: \( 2(50) + 0 = 100 \) (exceeds space)
- Not valid.
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40 books and 5 magazines (\( x = 40, y = 5 \)):
- Budget: \( 15(40) + 5(5) = 600 + 25 = 625 \) (satisfies budget)
- Space: \( 2(40) + 5 = 80 + 5 = 85 \) (exceeds space)
- Not valid.
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10 books and 30 magazines (\( x = 10, y = 30 \)):
- Budget: \( 15(10) + 5(30) = 150 + 150 = 300 \) (satisfies budget)
- Space: \( 2(10) + 30 = 20 + 30 = 50 \) (satisfies space exactly)
- Valid.
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20 books and 15 magazines (\( x = 20, y = 15 \)):
- Budget: \( 15(20) + 5(15) = 300 + 75 = 375 \) (satisfies budget)
- Space: \( 2(20) + 15 = 40 + 15 = 55 \) (exceeds space)
- Not valid.
Based on the evaluations above, the only valid combination of books and magazines that the bookstore can order is:
10 books and 30 magazines.