Which of the following will form the composite function g(f(x)) shown below?

g(f(x)) = 3x2 + 1

a. f(x) = x + 1 and g(x) = 3x2
b. f(x) = 3x + 1 and g(x) = x2
c. f(x) = x2 and g(x) = 3x + 1
d. f(x) = 3x2 and g(x) = 1

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