Agolfer hits the golf ball. the quadratic function y = −16x^2 + 80x gives the time x seconds when the golf ball is at height 0 feet. how long does it take for the golf ball to return to the ground? !

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7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation: