Apump currently contains 4 7/8 gallons of water but needs to be filled to capacity. the capacity of the pump is 9 5/8 gallons. how much more water is needed to completely fill the pump? express your answer in simplest mixed-number form.

Write a corresponding real world problem to represent 2x - 125=400

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Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?