The most common definition of a percentile is a number where a certain percentage of scores fall below that number. Jonil got a score of 89.9 points in a board exam which is the 97.5th percentile. If the variance is 9, what is the average score of all the board exam takers?

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality