Xavier rounds the number to the nearest integer and gets . Meanwhile, Yolanda rounds the same number to the nearest tenth, then passes her answer to Zazeela, who rounds that answer to the nearest integer and gets . Yet, believe it or not, they all rounded correctly!
(a) Give a specific number for which this scenario could happen. Explain why it happens.
(b) Find all numbers for which this scenario could happen. Explain how you know you found them all.
I know the possibilities, but how do you get 8.45 and 8.49. Also, why only those two?