Use this problem to answer questions 9 - 10.
Lauren and Minki are in a bike race. Lauren bikes at 18 miles per hour. Minki bikes at
12 miles per hour and has a 6-mile head start.
9. Write the system of equations that represents each person's distance. Let d
represent the distance and t represent the time.
Lauren:
Minki:
10. Solve the system of linear equations. When does Lauren catch up with Minki?

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average