To model the situation described, we need two equations based on the information given about the bags and caps.
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Total number of items equation: The total number of items (bags and caps) they plan to give away is 2,000. This can be represented as: \[ b + c = 2000 \] where \( b \) is the number of bags and \( c \) is the number of caps.
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Budget equation: The total cost for the bags and caps cannot exceed their budget of $12,500. The cost contribution from the bags (which cost $10 each) and caps (which cost $5 each) can be expressed as: \[ 10b + 5c = 12500 \]
So the pair of linear equations that model this situation is: \[ b + c = 2000 \] \[ 10b + 5c = 12500 \]
Thus, the correct option is: b+c=2000; 10b+5c=12500.