Answer:
Picture is not clear please post a clear picture. Note brainly is meant to be <u>one</u><u> </u><u>question</u><u> </u>per post for further reference
One decade is 10 years+ 8 years is 18 total years
18 minus 9 is 9 years
Hope this helps
Method 2 is the least biased.
1) vegetarians are a select group, so they might have a certain biased perspective
2) if students are chosen randomly from every grade, all grades are included and there will be a variety of responses
3)not all students dislike the program, so it is an unfair representation
4)only students who have a strong opinion will complete the survey
-54-7r=10+25r
-7r-25r=10+54
-32r=64
r=64/-32
r=-2