A golf ball is hit into the air. The path of the golf ball is represented by the function h=40t-5t^2, where h is the height of the ball in feet and t is the time in seconds. How many seconds will it take the golf ball to reach a height of 60 feet? A. 2 B. 3 C. 4 D. 8

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The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?