Mathematics, 02.03.2021 03:00 derpmuffin47

Rosa throws a ball. The equation d = −t2 + 4t + 5 represents the path taken by Rosa's ball where d is the height of the ball (in feet) after t seconds. For this throw, how many times was Rosa's ball 8 feet in the air?

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Rosa throws a ball. The equation d = −t2 + 4t + 5 represents the path taken by Rosa's ball where d i...