exam Maths Puzzle Numerical Ability

8d - (-7c - 2d)

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in math class your average grade for the first three tests is 81. You want to raise your final average to 85. What grade do you need on the final, the only remaining test in the term? Greetings,

Statistics question. They were posed by an English as a second language statistics instructor and I am writing them word for word.

1) True or false
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