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Math Help - Solve for t

  1. #1
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    Solve for t

    The formula R= -0.75t +385
    can be used to predict the world record in the 1500-m run t years after 1930. Determine (in terms of an inequality) those years for which the world record will be less than 3.7 min. Solve for t
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  2. #2
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    Quote Originally Posted by bball20 View Post
    The formula R= -0.75t +385
    can be used to predict the world record in the 1500-m run t years after 1930. Determine (in terms of an inequality) those years for which the world record will be less than 3.7 min. Solve for t
    R = -0.75t + 385 < 3.7
    -0.75t < -381.3
    t > 508.4
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