Peter processed two catering orders at the sandwich shop where he works. the first order was for 7 trays of club sandwiches and 10 trays of vegetarian sandwiches. that order cost $149. the second order, which cost $10, was for 1 tray of vegetarian sandwiches. this situation is modeled by the matrix equation shown.[7   10]  [c]      [149][0      1 ]  [v] =  [10]determine the cost of a tray of club sandwiches and the cost of a tray of vegetarian sandwiches. show your work.

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