Nelly spends 25% of her free time surfing the internet if she spends approximately 1 hour per day surfing the internet how many hours of free time does she each day

She would have 4 hours of free time because 25% is 1/4 of 100% and 1 hour is equal to 25% so 1 time 4 is equal to 4.

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