Mark's age, x, is 6 times his age 2 years ago. Which equation represents the statement?
O x = 2x + 6
O x = 6(x - 2)
O x = 6x + 2.
OX= 6x – 2

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”?

Question 9 of 10 2 points suppose your sat score is 1770. you look up the average sat scores for students admitted to your preferred colleges and find the list of scores below. based on your sat score of 1770, which average score below represents the college that would be your best option? o a. 1790 o b. 2130 o c. 2210 od. 1350

If jklm is a trapezoid, which statements must be true?