An object is launched upward at 64 ft/sec from a platform that is 80 feet high. What is the objects maximum height if the equation of height (h) in terms of time (t) of the object is given by h(t) = -16t2 + 64t + 80?

Question

anonymous · Answer

144 feet
		
123 feet
		
167 feet
		
172 feet

anonymous · Answer

@StudyGurl14

anonymous · Answer

@freckles

anonymous · Answer

i just really need help on how to set up the equation… i can do the rest.

studygurl14 · Answer

Graph the parabola. Find it's maximum point.

studygurl14 · Answer

its*

anonymous · Answer

but how do u do that… this is a random word problem they just threw in… I'm not used to them @StudyGurl14

studygurl14 · Answer

You actually don't need to graph. Strike that. You can find the maximum point (vertex) without graphing. Look here: http://www.uiowa.edu/~examserv/mathmatters/tutorial_quiz/geometry/findingvertexofparabola.html