You mean ?
What were your solutions for y=0?
A stuntman is being shot out of a canon. Heīs following a track that is determinded by this equation:
y = 1 + 3x - 0,05x^2
where x meter is the horizontal distance from the canon and y meter is the height.
Will the stuntman be able to cross a gulch that is 58 metres wide?
Picture (I drew xD):
OPS! 56 m bred (swedish word for: width)
56 m bred = 56 m width