Brett earned scores of 74, 90, and 84 on his first three quizzes this term. What score does he need on his next test to raise his aver

Question

Brett earned scores of 74, 90, and 84 on his first three quizzes this term. What score
does he need on his next test to raise his average to 85?

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Thu Thảo 5 months 2021-08-09T11:24:18+00:00 2 Answers 3 views 0

Answers ( )

    0
    2021-08-09T11:26:04+00:00

    Answer:

    92

    Step-by-step explanation:

    (74 + 90 + 84 + 92) / 4 = 85

    0
    2021-08-09T11:26:11+00:00

    Answer:

    x ≥ 92

    Step-by-step explanation:

    let ‘x’ = necessary score

    (74 + 90 + 84 + x) / 4 ≥ 85

    (248 + x) / 4 ≥ 85

    cross-multiply:

    248 + x ≥ 340

    x ≥ 92

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