Question: (8 pts) 7. Solve the following system using a matrix and converting the matrix to reduced row echelon form, without introducing any fractions. 3x -

(8 pts) 7. Solve the following system using a matrix and converting the matrix to reduced row echelon form, without introducing any fractions. 3x - 2y + 5z = -7 x - y + 3z = -5 4x+ y+ 62 = 6 8. Consider the sequence 19, 25, 31, 37, ... (3 pts) a. What is the general term of this sequence? (3 pts) b. What is the 137th term in this sequence? (3 pts) c. What is the sum of the first 137 terms in this sequence? 9. Consider the sequence 2, 8, 32, ... (3 pts) a. What is the general term of this sequence? (3 pts) b. What is the 1 1th term in this sequence

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