The grades on a mathematics midterm are normally distributed with = 71 and o = 4.5. Rob scored 59 on the exam. Find his z-score and write your result in the empty box provided below round to two decimal places.

Question 2(multiple choice worth 1 points) simplify 7 square root of 3 end root minus 4 square root of 6 end root plus square root of 48 end root minus square root of 54. 11 square root of 6 end root minus 7 square root of 12 11 square root of 3 end root minus 7 square root of 6 negative 3 square root of 9 4 square root of 9