-- Posted by Anonymous at 6:25 pm on Oct. 12, 2008 I can't fail this test, or I won't pass the class. Please just try to help me with this math problem.  Please. You toss a ball into the air at a height of five feet.  The velocity of the ball is 30 feet per second.  You catch the ball six feet from the ground.  Use the model 6=-16t^2+30t+5 to find how long the ball was in the air. I really don't have any idea how to solve this problem.  Help? -- Posted by HeartofJuyoMk2 at 6:27 pm on Oct. 12, 2008 you can't be above 13 and not know how to solve a simple quadratic -- Posted by HeartofJuyoMk2 at 6:27 pm on Oct. 12, 2008 look up the eyeglass or grouping methods -- Posted by Anonymous at 6:28 pm on Oct. 12, 2008 Quote: from HeartofJuyoMk2 at 6:27 pm on Oct. 12, 2008 you can't be above 13 and not know how to solve a simple quadratic Oh, thank you for being so helpful.   Please, I'm not asking to be ridiculed.  I need help. -- Posted by Anonymous at 6:29 pm on Oct. 12, 2008 Quote: from HeartofJuyoMk2 at 6:27 pm on Oct. 12, 2008 look up the eyeglass or grouping methods Thanks.  I'll try that.