: Do the columns of A span R*? Does the equation Ax = b have a solution for each b in R*? 2 4. 12

: Do the columns of A span R*? Does the equation Ax = b have a solution for each b in R*?
2
4.
12 -8
3
12 -9
A =
1
10 -7
-2 -7 -24 15
Do the columns of A span R*? Select the correct choice below and fill in the answer box to complete your choice.
(Type an integer or decimal for each matrix element.)
O A. No, because the reduced echelon form of A is
O B. Yes, because the reduced echelon form of A is

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