algebra

erika has received scores of 82, 87, 93, 95, and 90 on math quizzes. What score must Erika get on her next quiz to have an average of 90?

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  1. 93 90x6=540
    82+87+95+90+93=447
    540-447=93

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    posted by bill
  2. She has 447 out of 500 points now.

    0.9 * 600 = 540

    540 - 447 = 93

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