NASA launches a rocket at t = 0 seconds. Its height, in meters above sea-level, as a function of time is
given by h (t) = -4.9t^2 + 328t + 423.
Assuming that the rocket will splash down into the ocean, at what time does splashdown occur?
The rocket splashes down after

seconds. (Round your answer to 2 decimals.)
How high above sea-level does the rocket get at its peak?
The rocket peaks at

meters above sea-level. (Round your answer to 2 decimals.)