The arrows drawn at the ends of a number line show that it extends:
AFaintly
BFirmly
CFinely
DForever
Answer & Solution
Correct answer: D. Forever
1. No largest positive number can be marked.
2. No smallest negative number can be marked either.
3. So the line extends forever.
_Source: OpenStax Prealgebra 2e, Chapter 3, Integers._
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