One week in the summer Hanna worked 5 days. Each day she earned $2 more than the previous day. She earned a total of $60. How much did she earn each day?

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?