The motion of a ball scooped by a field hockey player can be modeled by h=-16t^2+40t, where t is the time in seconds and h is the height of the ball. when will the ball reach 25 feet?
solve with quadratic formula or completing the square or factoring,

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

The table shows the results of three plays in a football game. what is the net result of the three plays? football game 1st play 5 yards 2nd play -9 yards 3rd play 12 yards

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.