What is the inverse of the function f(x) = x – 12?

What is the sum of these mixed numbers 2 1/8 + 4 3/8

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”?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2