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HELPPP ASAP!!!
A model rocket is launched from a raised platform at a speed of 144 feet per second. Its height in feet is given by:
h(t)
-16t2
144t + 20 (t=seconds after launch). What is the rockets maximum height reached after it is launched?
•280 feet
263 feet
344 feet
355 feet

Sagot :

Answer:

344 ft

Step-by-step explanation:

This is the equation for a dome shaped parabola

The TIME of the highest point is found by  

   t = - b/2a = - 144/(2 * -16) = 4.5 sec

Sub this value of t into the equation to find max height = 344 ft

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