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Answer this question! 30 points and brainliest! only if you know the answer.

What is the first quartile of this data set? 10, 11, 12, 15, 17, 19, 22, 24, 29, 33, 38 a. 12 b. 19 c. 29 d. 10

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1