keisha is babysitting at 8$ per hour to earn money for a car. So far she has saved $1300. The car th

Discussion in 'Calculator Requests' started by math_celebrity, Nov 17, 2020.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    keisha is babysitting at 8$ per hour to earn money for a car. So far she has saved $1300. The car that keisha wants to buy costs at least $5440. How many hours does Keisha need to babysit to earn enough to buy the car

    Set up the Earning function E(h) where h is the number of hours Keisha needs to babysit:
    E(h) = 8h + 1300

    The question asks for h when E(h) is at least 5440. The phrase at least means an inequality, which is greater than or equal to. So we have:
    8h + 1300 >= 5440

    To solve this inequality, we type it in our search engine and we get:
    h >= 517.5
     

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