If the average person can climb 7 stairs every 10 seconds, taking a 60 second break after each time they have climbed 455 stairs, how long in hours would it take to climb all the stairs in Burj Khalifa?

1.5%

Step-by-step explanation:

If you want to lower your monthly payments, purchasing points can be an option. When you purchase points you will reduce your monthly payment since you paid interest in advance. Usually every point purchased is equal to 1% of the total mortgage loan, for example, if your total loan's principal was $500,000, every point costs $5,000.

In this case, since Kevin purchased 3 points, his mortgage interest rate will lower from 4.5% to 1.5% (= 4.5% - 3%).