A professional base jumper jumps off the Perrine Bridge in Twin Falls, Idaho. When he jumps, he free falls for a few seconds and then opens his parachute so that he can land safely. Before he opens the parachute, the equation h(t)=-4.9 t²+t+450 models his height in meters t seconds after he jumps. The equation h(t)=-5 t+325 represents his height after he opens the parachute. How long after jumping did he open the parachute?
The professional base jumper will open his parachute approximately ? seconds after he jumps off Perrine Bridge. The solution ? is not reasonable for the situation since this would mean the jumper opened his parachute 4.5 seconds ? he jumped off Perrine Bridge.