A projectile's height above ground in feet is a quadratic function of time t in seconds since launched. Three values of the function are given in the table below. What is the maximum number of feet above the ground that the projectile reaches?

Question

A projectile's height   above ground in feet is a quadratic function of time t in seconds since launched. Three values of the function are given in the table below.  What is the maximum number of feet above the ground that the projectile reaches?

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The Answer of A projectile's height   above ground in feet is a quadratic function of time t in seconds since launched. Three values of the function are given in the table below.  What is the maximum number of feet above the ground that the projectile reaches?

A Projectile's Height Above Ground in Feet Is