Asked by alex

your friend tosses a ball into the air at an initial velocity of 18 feet per second.The equation h=-8t^2+18t+5 models the height h of the ball t seconds after it was thrown.

When did the ball reach its highest point?

Answers

Answered by Steve
recall that the vertex of ax^2+bx+c is at x = -b/2a
Answered by alex
thank u
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