Answer:
8.5
Explanation:
8.5439
the tenth is were the "5" is located at after the parenthesis
4 or less, let is rest, 5 or more, let it sore
The number after the "5" is "4". Since 4 is less than 5, it wont make a difference, and so it can't change the number "5" to a higher number. And so when we want to round it up to the nearest tenth, all we need to do is take away the 439 after the 5, and we stay with....
8.5
Hope this helped!
Have a supercalifragilisticexpialidocious day!