Answer:1. 7 2. 
Step-by-step explanation:
1.
= 7
2.
( doesn't have any simplest radical form)
Answer:
D. on the x axis is the best answer
14-8=6. So far we have 3 km, then 6 divided by 2 which is 3 additional kilometers. 3+3 is 6 so the final answer is 6km