Math 116

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The formula R= -0.075t + 3.85 can be used to perdict the world record in the 1500 meter run, t years after 1930. Determine an inequality that identifies the years in which the world record will be less than 3.4 minutes.
Soleve for t.
t >__? round to the nearest whiole number.

  • Math 116 -

    -0.075t + 3.85 < 3.4

    Change the < to = and solve the resulting equation to get the year (measured from 1930) that the world record will become 3.4 minutes.

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