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Alain throws a stone off a bridge into a river below. The stone's height (in meters above the water), x seconds after Alain threw it, is modeled by: h(x) = -5x^2+ 10x + 15 How many seconds after being
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Alain throws a stone off a bridge into a river below.

The stone's height (in meters above the water), x seconds after Alain threw it, is modeled by:
h(x) = -5x^2+ 10x + 15
How many seconds after being thrown will the stone hit the water?

User Coldmind
by
8.7k points

1 Answer

1 vote

the answer is 3 seconds

User Mujeeb
by
8.4k points
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