An unmanned reconnaissance drone is flying over enemy territory using a preprogrammed flight pattern for a total flight time of 28 minutes. Its height​ (in feet) can be modeled by the function H(t)=−1/2t^2+17t+683, where t is the number of minutes of flight time since takeoff.  Due to the​ terrain, the​ enemy's radar cannot track the drone when it is below 827 feet. For what values of t will the drone be exactly 827 feet​ high? A) Earliest time= ___ minutes B) Latest time=____ minutes

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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.