An object is launched directly overhead at 36 feet per second. The height (in feet) of the object is given by ( ) 2 ht t t =− + + 16 36 5, where t is the time (in seconds) since the object was launched. For how many seconds is the object at or above a height of 25 feet?

Atown recently dismissed 5 employees in order to meet their new budget reductions. the town had 5 employees over 50 years of age and 19 under 50. if the dismissed employees were selected at random, what is the probability that exactly 2 employees were over 50? express your answer as a fraction or a decimal number rounded to four decimal places.