SOLUTION: The height of a cannonball shot upward from a height of 14 feet above the ground with an initial velocity of 60 ​feet/second is given by the equation h equals negative 16 t squ

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Question 1143414: The height of a cannonball shot upward from a height of 14 feet above the ground with an initial velocity of 60 ​feet/second is given by the equation
h equals negative 16 t squared plus 60 t plus 14
h=−16t2+60t+14.
After how many seconds will the cannonball be 30 feet above the​ ground?

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
30=-16t%5E2%2B60t%2B14, by substitution. Can you solve that?