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5 June, 17:04

e is a math tutor. She charges each student $210 for the first 7 hours of tutoring and $20 for each additional hour. When the number of hours (h) that Julie spends tutoring a student is greater than 7 (h > 7), the equation that gives the amount (A) that Julie earns in dollars is. If Julie earns $410 tutoring one student, the total number of hours she spent tutoring the student is.

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  1. 5 June, 19:02
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    Part 1:

    if the number of hours (h) is greater than 7.

    Equation for the amount (A) in dollar is

    Amount (A) = 210 + (h-7) x20

    Part 2:

    if she earns 410,

    with the same equation

    410 = 210 + (h-7) x 20

    200 = (h-7) x 20

    10 = h-7

    17 = h

    therefore, number of hours tutored is 17.
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