Afootball team gained 35 yards on a first down, lost 15 yards on the second down and gained 12 yards on the third down. how many yards do they need to gain on the fourth down to have a ten yard gain from their starting position?

Idon't see any graph, however the graph of the function : f(x) = x²-2x+3 is a parabola: 1) open upward (since a> 0)2) it intersects y-axis in 3 (y=3)3) its axis of symmetry is x = +1 ( -b/2a)4) it's minimum is y = -2, so its vertex is (1,-2)5) it doesn't intersect the x-axis since discriminant < 0