If y = a(x − 1)^2 + q and points (−1, −9) and (1,1) both lie on the parabola, what is the optimal (maximum/minimum) value of y? Find the value of a. plz answer with full proces, i will mark brainliest for sure.

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?