100 pts for a few questions Ill give brainliest! (if you answer 5 ?s you get the other 50)

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?

Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?