Solve for n: m equals 5 n minus 6 r

Group of answer choices

n equals 5 left parenthesis m plus 6 r right parenthesis

n equals fraction numerator m plus 6 r over denominator 5 end fraction

n equals m over 5 plus 6 r

n equals m plus 6 r minus 5
thank you for your help. also, pick an answer choice

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.