can someone please show me how to do the math to get the below answers please and thank you

Suppose the people living in a city have a mean score of 65 and a standard deviation of 10 on a measure of concern about the environment. Assume that these concern scores are normally distributed. Using the 50% 34% - 14% figures, approximately what percentage of people have a score (a) above 65. (b) above 75, (0) above 45. (d) above 55, (e) below 65, (f) below 75, (g) below 45, and (h) below 55? (a) A score of 65 is equal to the mean. Approximately 50% of people have a score above the mean. Thus, approximately 50% of people have a score above 65. (b) Given a mean score of 65 and a standard deviation of 10, a score of 75 is 1 standard deviation above the mean. Approximately 16% of people have a score greater than one standard deviation above the mean. Thus, approximately 16% of people have scores above 75. (0) Given a mean score of 65 and a standard deviation of 10, a score of 45 is 2 standard deviations below the mean. Approximately 98% of people have a score greater than two standard deviations below the mean. Thus, approximately 98% of people have a score above 45. (d) Given a mean score of 65 and a standard deviation of 10, a score of 55 is 1 standard deviation below the mean. Approximately 84% of people have a score greater than one standard deviation below the mean. Thus, approximately 84% of people have a score above 55