What is the slope of the graph?

True or false look at the picture pls : /

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse

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”?