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11-38.
  1. Multiple Choice: A racer with a five foot head start runs with an acceleration of a(t) = 6t ft/sec2. At t = 4 seconds, her velocity was 50 feet per second and she finished the race in 9 seconds. How long was the race? Homework Help ✎

    1. 734 ft

    2. 737 ft

    3. 747 ft

    4. 750 ft

    5. 752 ft

Use v(4) = 50 to solve for C.

Use d(0) = 5 to solve for C.

Use your equation for d(t) to evaluate d(9).