Use the method of completing the square to transform the quadratic equation into the equation form (x – p)2 = q.

x2 - 12x - 9 = 0
a) (x - 36)2 = 9
b) (x - 36)2 = -9
c) (x - 6)2 = 45
d) (x - 6)2 = -45

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