During a test flight, janice's
remote control helicopter
reached a height of 7.8 feet.
. this was 2.5 feet less than the
! height of marvin's remote
i control helicopter. write and
isolve a subtraction equation to
¡find the height of marvin's
fremote control helicopter.

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