The function  y  = -16t2  + 486 models the height y in feet of a stone  t  seconds after it is dropped from the edge of a vertical cliff. how long will it take the stone to hit the ground? round to the nearest hundredth of a second

2x minus y equals 6, x plus y equals negative 3

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.

Common binomial factor of 6x(3x+7)+5(3x+7)