Jack was so frustrated with his slow laptop that he th rew it out of his second story window. The height, h, of the laptop at time t seconds can be given by the equation ℎ ( 푡 ) = −16푡 2 + 28푡 + 17. When will the laptop hit the ground?

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.