Question 13 (5 points) (01.04 LC) Simplify: (3x2 – 3xy + y2) - (7x2 - 4xy - 5y2) (5 points) Oa -4x² - 4xy + 6y² -4x2 + 4xy + 4y2 oc -4x2 + 12xy - 4y2 -4x2 - 12xy + 6y2

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

Bobs burgers bam has a special deal of 4 hamburgers for $6. at that rate, how much should it cost to buy 3 hamburgers?

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