Answer:
39,000
Explanation:
First you need to find out which number in in the thousands place which is 38,708. (The 8 that is underlined.)
The rule for rounding is to look at the number to the right of the one you are rounding which would be 7 in this problem.
If that number is lower than 5 you don't round up and you leave the number as it is. But is the number is 5 or higher you round up.
7 is higher than 5 so you would round 8 to 9 and 38,708 now becomes 39,000.