A school principal wants to find out the opinion about the playground equipment from the students at the school. Which method produces the most representative sample for the survey? A Randomly survey 150 students playing out at recess. B Randomly e-mail 150 parents of students. C Mail surveys to all homes within 5 blocks of the school. D Survey each teacher in the building.

A.

Step-by-step explanation:

They are students, and they are on the playground, so it makes more sense than e-mailing parents or teachers or mailing it to all houses. A will get the best results. (sorry it's hard to explain)

e) none of the above because the measure of angle cba is 101°

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value