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Use an inequality to solve the problem. Be sure to show the inequality and all of your work. A car rental company has two rental rates. Rate 1 is $63 per day plus $0.18 per mile. Rate 2 is $126 per day plus $0.09 per mile. If you plan to rent for one week, how many miles would you need to drive to pay less by taking Rate 2?

  • math - ,

    let the number of miles driven be x

    when is .09x + 126 ≤ .18x + 63 ?
    times 100
    9x + 12600 ≤ 18x + 6300
    -9x ≤ - 6300
    x ≥ 700

  • math - ,

    x >700

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