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Quadratics Problems

November 22, 2012 Leave a comment Go to comments

Question 1

A bullet is fired into the air. It’s height in metres is given by the function 48t – 4t2, where t is the number of seconds after it
is fired.

  1. How long does it stay in the air?
  2. What is the maximum height it reaches?
  3. After what time is it 44m high?
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