In a large statistics class, the final grades have a mean of 67.4 and a standard deviation of 12. Assuming that the distribution of these grades is normal, what percentage of grades exceed 85? (no decimal)

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

Ms. sutton recorded the word counts and scores of the top ten essays in a timed writing contest. the table shows her data. how does the word count of an essay relate to its score in the contest? word count tends to decrease as the score decreases. word count tends to increase as the score decreases. word count tends to remain constant as the score decreases. word count has no apparent relationship to the score of the essay.

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?