Find the median for the given set of data. 5/8, 3/4, 1 1/8, 1 1/4

I should be able to do this but I cannot find an adequate result...

What is this equation in point-slope form?

Math it's appreciated. (picture provided)

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”?