А
(7n + 12)
В
Pr
D
(13n - 16) \(6n)
Te
С
2
2

Find the x coordinate of the point.

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”?

Graph a point. start at your origin, move left 10 units, and then move up three units which ordered pair is the point you graphed