Britney throws an object straight up into the air with an initial velocity of 27 ft/s from a platform that is 10 ft above the ground. use the formula h(t)=−16t2+v0t+h0 , where v0 is the initial velocity and h0 is the initial height. how long will it take for the object to hit the ground?

1s

2s

3s

4s

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236