Which expression is equivalent to the given expression? (3m -4) ^3 (3m ^5)

A.
81/m^2
B.
27/m^7
C.
27/m^2
D.
81/m^7
any number with this^ infront of it is an exponent

In two or more complete sentences, determine the appropriate model for the given data and explain how you made your decision. (1,-1), (2,0.5), (5,1.5), (8,2)

(x-5)1/2+5=2 what is possible solution of this equation

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”?