$59.85/15 3/5 gallons = ?/1 gallon

Solve the equation x/4 - 5= -8 -27 -12 -7 12

What is always true about a positive integer raised to a negative odd power?

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”?