The path of a toy rocket is given by P (t) = -(t-3)² + 21,

Last updated: 7/12/2022

The path of a toy rocket is given by P (t) = -(t-3)² + 21, where t is in seconds, and P is in meters. When is the maximum height reached by the rocket? (A) -3 seconds B) 2 seconds c) 0 seconds D) 3 seconds