The height of a cannonball shot upward from a height of 15 feet above the ground with an initial velocity of 60 feet/second is given by the equation . After how many seconds will the cannonball be 40 feet above the ground?

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savannaflorian5141

17.03.2020

Mathematics

Difference in doughnuts = 50 - 40 = 10
Difference in money = 15 + 5 = 20

20 ÷ 10 = $2
Each doughnut costs $2

Check:
40 x 2 + 5 = $85
50 x 2 -15 = $85
Ravi has $85 at first.

Each doughnut costs $2

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The height of a cannonball shot upward from a height of 15 feet above the ground with an initial velocity of 60 ​feet/second is given by the equation . After how many seconds will the cannonball be 40 feet above the​ ground?