Which of the following algebraic expressions represents the word phrase, “the difference of the quotient of m and 9 and the quotient of n and 30”? A.
m9−n30

B. m−9n−30

C. m−9−30
D. m9n
−
30

Simplify the expression 10/11(22z) + (a+5) -1

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”?

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3