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During a test, you already got 21 correct answers out of 33. 1. Give an expression for your grade as a function of the

During a test, you already got 21 correct answers out of 33. 1. Give an expression for your grade as a function of the number of additional correct answers 2. How many more correct answers do you need to get 70% on your test? Round your number to the nearest integer.

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