Gary invested $1,000 into an account earning interest at an annual rate of 5% compounded annually. each year, he deposited an additional $1,000, and made no withdrawals. when he closed the account, he had a balance of $4,525.64. how much interest would gary earn in that same time if he invests $10,000 and deposits $10,000 into the account each year?

Anew obstacle course is home to several new types of challenging obstacles. one such obstacle is traversing a 15-stair staircase. to make it more challenging, the stairs are not uniformly spaced. rather, the vertical space between consecutive stairs for the first 10 stairs is 113 feet and the vertical space for the last 5 stairs is 134 feet. what is the total vertical distance traveled ascending and descending the entire 15-stair staircase?