a ball is thrown directly upward from a height of 6ft with a initial velocity of 28ft/sec. the function s(t)=-16t^2+28t+6 gives the height of the ball, in feet, t seconds after it has been thrown. determine the time at which the ball reaches its maximum height and find the maximum height

Television viewing reached a new high when the global information and measurement company reported a mean daily viewing time of 8.35 hours per household. use a normal probability distribution with a standard deviation of 2.5 hours to answer the following questions about daily television viewing per household. a. what is the probability that a household views television between 4 and 10 hours a day? (to 4 decimals) b. how many hours of television viewing must a household have in order to be in the top 7% of all television viewing household? (to 2 decimals) c. what is the probability that a household views television more than 4 hours a day? (to 4 decimals)