The answer would be D. Survey a random sample of persons within each geographical region of the city.
This is because the other 3 answers are biased samples of data, which could sway the data collected and/or the decision that is made upon it.
Hope this helps! :)
2nd one, x^2 + 8x + 4
add 2x^2-x^2, 6x+2x, -3+7
Answer:
A obtuse triangle when graphed
Oído i just needed answers
