Answer:
The population of a statistical survey is chose at random, so it's not believed to be biased.
I’m not sure if this is correct but here is a picture of what I think the answer might be. P.S my handwriting is not neat
A. assuming the sales tax is already added to the 72.60 all you have to do is add 20%
Times the x’a together and x*10 then 2*x and 2*10
Yes; they have the same side lengths and angles