Raymond B. answered • 08/28/20

Math, microeconomics or criminal justice

Use the very first part of the quadratic formula, without the plus & minus square root part.

That's h= -b/2a = -56/-28 = 2 seconds for maximum height

plug 2 back into the original equation -14(2)^2 + 56(2) +60 = -56+112+60 = 116 feet for max height, reached in 2 seconds.