HELP!! During a local community event, a helicopter hovers 75 feet over a field and drops plastic eggs filled with candy and prizes. This situation can be modeled with the equations h= - 16t^2+75 where h is the height (in feet) of the plastic eggs as a function of time t (in seconds). The spectators must wait until the prize eggs have landed on the ground before they can run and retrieve the prizes. How long must the spectators wait after the eggs are dropped in order for a chance to retrieve a prize. Round your answer to the nearest hundredths place.