Mike works part-time at a grocery store, He also mows law to earn some extra money. He earns $9.50 at the grocery store and $12 an hour for mowing lawns. He worked for a total of 40 hours last week and made $430.
Which system of equations best represents the relation between the number of hours work at the grocery store (X) and the number of hours
he spent mowing lawns (y) last week?
b
Ос
Od
12x + 9.5y = 430 x + y = 40
9.5x+12y = 430 x + y = 40
12x - 9.5y = 430 x + y = 40
9.5x - 12y = 430 x + y = 40

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