Please help plzz and thank youuu

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?

Which expression is the factorization of x^2+10+21

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?