Although the actual amount varies by season and time of day, the average volume of water that flows over the falls each second is 4.84.8 times ×10 superscript 5105 gallons. how much water flows over the falls in an hour? write the result in scientific notation. (hint: 1 hour equals 3600 seconds)

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”?