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16 more than the product of 5 and p

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is

Which of the following questions describes the equation g + (-4) = -5? a)what number, when added to negative four, is equal to negative five? b)what number, when added to negative five, is equal to negative four? c)what number, when subtracted from negative four, is equal to negative five? d)what number, when subtracted from negative five, is equal to negative four?