Question 1152706
s equals  -2.7t^2 + 30t + 6.5​, where t is the number of seconds after the ball was thrown. Complete parts a and b.
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a. After how many seconds is the ball 12 ft above the​ moon's surface?
s(t) = -2.7t^2 + 30t + 6.5 = 12
2.7t^2 - 30t + 5.5 = 0
Solve for t
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The smaller value is ascending.
The larger is descending.