Write a factor that you can use to rationalize the denominator in the equation... also can someone explain how you got the answer cause I have other problems like this... TY! (And don’t give me a file)

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a.about 4 b.about 8 c.about 40 d.about 21

Which of the symbols correctly relates the two numbers below check all that apply 6? 6

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.