Find the weighted average.Michael gets test grades of 70, 80, 81, and 87. He gets a 75 on his final exam. Find the weighted mean if the tests each count for 10% and the final exam counts for 60% of the final grade. Round to one decimal place.
A. 76.8
B. 78.6
C. 235.8
D. -82.2
Answer: A
Mathematics
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A. 
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