-3 -3 9. 2 Let A = -3 -6 12 and b = 3 -3 -2 13 -5 Denote the columns of A by a1, a2, a3, and let W = span (a], a2, a3). Select Answer 1. Determine if b is in W Select Answer 2. Determine if b is in (a1, a2 a3) How many vectors are in (a1, a2 a3)? (For infinitely many, enter -1) How many vectors are in W? (For infinitely many, enter -1)

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