A professor grades students on three tests, four quizzes, and a final examination. Each test counts as two quizzes and the final examination counts as two tests. Sara has test scores of 69, 79, and...

A professor grades students on three tests, four quizzes, and a final examination. Each test counts as two quizzes and the final examination counts as two tests. Sara has test scores of 69, 79, and 84. Sara's quiz scores are 87, 77, 92, and 74. Her final examination score is 69. Use the weighted mean formula to find Sara's average for the course. (Round your answer to one decimal place.)