To model the situation with a pair of linear equations, let's define the variables:
- Let \( b \) represent the number of bags.
- Let \( c \) represent the number of caps.
From the problem statement, we have the following information:
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The total number of items (bags and caps) is 2,000: \[ b + c = 2000 \]
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The total cost for the bags and caps must not exceed the budget of $12,500. Given that each bag costs $10 and each cap costs $5, the cost equation can be set up as: \[ 10b + 5c = 12500 \]
So, the pair of linear equations that model this situation is:
- \( b + c = 2000 \)
- \( 10b + 5c = 12500 \)
Thus, the correct response from the options provided would be: \( b + c = 2000 ; 10b + 5c = 12500 \)