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22 June, 19:58

Autumn is working two summer jobs, making $16 per hour tutoring and making $12 per hour landscaping. In a given week, she can work no more than 17 total hours and must earn at least $240. If Autumn worked 3 hours landscaping, determine all possible values for the number of whole hours tutoring that she must work to meet her requirements. Your answer should be a comma separated list of values. If there are no possible solutions, submit an empty answer.

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  1. 22 June, 20:18
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    13,14

    Step-by-step explanation:

    t = tutoring

    l = landscaping

    16t + 12l ≥240

    t+l ≤17

    We know that she worked 3 hours landscaping

    l = 3

    t+3≤17

    t ≤14

    16t + 12*3 ≥240

    16t + 36 ≥240

    Subtract 36 from each side

    16t ≥204

    Divide each side by 16

    t ≥204/16

    t ≥12.75

    We know that

    12.75 ≤t≤14

    She has to work whole hours

    13,14
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