A model rocket is launched with an initial upward velocity of $235$ ft $/$ s$.$ The rocket's height h $($in feet$)$ after t seconds is given by the following. h$=235$ t$-16$ t$^2$ Find all values of t for which the rocket's height is $151$ feet. Round your answer$($s$)$ to the nearest hundredth. $($If there is more than one answer, use the $"$or$"$ button.$)$