The displacement from equilibrium of a mass oscillating on the end of a spring suspended from a ceiling is given below, where y is the displacement (in feet) and t is the time in seconds. Use a graphing utility to graph the displacement function on the interval [0, 10]. Find the value of t past which the displacement is less than 3 inches from equilibrium. (Round your answer to two decimal places.)
y = 1.49e^(-0.22t) cos(4.9t)
t = _____ sec