Answer:
7000
Explanation:
to round off to one significant figure, we need to round off to the nearest thousand (as the thousands place is the leftmost place). to do this, we need to check the hundreds place to see if it is 5 or greater. if it is, we add 1 to the thousands place.
the hundreds place is 7, so we add 1 to the thousands place.
the thousands place is 6, so we add 1 and get 7.
thus, our rounded value is 7000.