Dr. Addams is comparing low, middle, and high socioeconomic status
1 answer:
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Answer:
r = 6 in
Step-by-step explanation:
=
r²h/3 = 216
r² (18/3) = 6 r² = 216
r² = 216/6 = 36
r = 6
==> she can buy 45 notebooks at most.