John removed 64 fish from his pond over a period of 8 days. He removed the same number of fish each day. What was the change in the number of fish in the pond each day?

He removed 8 fish a day. 64/8=8 :) hope this helps and have a nice day!

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