PLEASE HELP!! Evaluate the expression below using the properties of operations. Show all work. 18 ÷ (-⅔) x 4 ÷ (-7) x (-3) ÷ ¼

Which symbol makes the steam in true 0.7 > 0.77

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”?

Need solving this 2nd limit problem.