Answer:
Least Value - -s
Greatest Value - s
Closer to Zero - s + r
Explanation:
r = about -2
s = about 2
-s = exactly -2
r + s = about 0
When looking at the number line, s is the farthest away right from zero, making it the variable with the most value that is at least two.
Since the expression has a choice of a negative s, it would simply mean that two would become negative two.
Since you know the values of s + r, you will know that -2 + 2 would equal to 0.
Overall
-The least value would be -s
-The greatest value would be s
-The expression that is closer to zero would be s + r
Hope this helps you with your Khan Academy Unit Test. (By the way, I have an account there and I mastered the Elementary & MS Course!)
-From a Fifth Grade Honors Student!