Question 139993
P-30 is less than or equal to 12.3
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|p-30| <= 12.3

-12.3 <= p-30 <= 12.3

17.7 <= p <= 42.3
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if 580 seniors graduate from this school, what is the range for the number of graduates planning to enlist?
0.177*580 < number < 0.423*580
102.66 <= number <= 245

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Cheers,
Stan H.