1.An art history professor assigns letter grades on a test according to the following scheme. A: Top7%of scores B: Scores below the top7%and above the bottom55%

C: Scores below the top45%and above the bottom22%

D: Scores below the top78%and above the bottom9%

F: Bottom9%of scores

Scores on the test are normally distributed with a mean of65.7and a standard deviation of8.5. Find the minimum score required for an A grade. Round your answer to the nearest whole number, if necessary.