To solve the compound inequality \( 5 - 6q \geq -16q - 15 \) and \( -16q - 15 \geq -6q - 15 \), we will solve each part separately.
First Inequality
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Start with the first inequality: \[ 5 - 6q \geq -16q - 15 \]
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Add \( 16q \) to both sides: \[ 5 + 10q \geq -15 \]
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Subtract 5 from both sides: \[ 10q \geq -20 \]
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Divide by 10: \[ q \geq -2 \]
Second Inequality
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Now for the second inequality: \[ -16q - 15 \geq -6q - 15 \]
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Add \( 15 \) to both sides: \[ -16q \geq -6q \]
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Add \( 16q \) to both sides: \[ 0 \geq 10q \]
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Divide by 10 (note that we reverse the inequality since we divide by a negative number): \[ 0 \leq q \]
or equivalently: \[ q \leq 0 \]
Combined Results
Now we combine the results of both inequalities: \[ -2 \leq q \leq 0 \]
Thus, the solution can be written as the compound inequality: \[ \boxed{-2 \leq q \leq 0} \]