How do I correctly solve for questions 29 to 36, based on this problem in the image? And for 36, does the blue bubble go on the right or left of the bar?

X For a certain type of computers, the length of time between charges of the battery is normally distributed with a mean of 50 hours and a standard deviation of 13 hours. John owns one of these computers. 29. How many standard deviations away from the mean is a battery that last 30 hours? 30. What is the probability that his will charge will last between 50 and 70 hours? dec % 31. What is the probability that his charge will last less than 40 hours?' dec % 32. What is the probability that his charge will last more than 70 hours? dec % 33. What is the cut off for an unusually short time for a charge to last? units 34. What is the cut off for an unusually long time for a charge to last? units 35. Make a picture that represents Problem 31. Be sure to label the z values with the appropriate x values. Z -3 -2 0 2 3 Z= -3 -2 -1 0 1 2 3 X = 11 24 37 50 63 76 89 36. Make a picture that represents Problem 34. Be sure to label the z values with the appropriate x values