Algebra 1 just really teaches you the basics of algrebra
Answer:

Step-by-step explanation:
See attachment for complete question.
From the attachment:


Dilation:

Required
Determine R'
First, subtract the coordinates of P from R. This means that R is measured from P.



Next, apply dilation factor 0.5




Lastly, measure R' from the origin by adding the coordinates of P to R'



Answer:
Do you mean what is the square root?
Step-by-step explanation:
1.73205080757
2
2.2360679775
Just find something close if those aren't answer choices

Therefore, the answer is b < 7.