To figure out which of these pairs of numbers solves the equation \(2.5y - 3x = 10\), we can plug each pair into the equation.
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For the pair \((5, -2)\): \[ 2.5(-2) - 3(5) = -5 - 15 = -20 \quad \text{(not equal to 10)} \]
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For the pair \((-5, 2)\): \[ 2.5(2) - 3(-5) = 5 + 15 = 20 \quad \text{(not equal to 10)} \]
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For the pair \((5, 2)\): \[ 2.5(2) - 3(5) = 5 - 15 = -10 \quad \text{(not equal to 10)} \]
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For the pair \((-5, -2)\): \[ 2.5(-2) - 3(-5) = -5 + 15 = 10 \quad \text{(equal to 10)} \]
So, the ordered pair that works with the equation \(2.5y - 3x = 10\) is \((-5, -2)\).