The augmented matrix is in row-echelon form and represents a system of linear equations. Solve the system using backward substitution.
Write the solution as an ordered triple, if possible.
A. (-25, -1, 1)
B. No solution
C. (-10, -1, 1)
D. (-8, -2, 1)
Answer: C
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Find the maturity date and proceeds. Round to the nearest cent.Face value: $8,207Discount rate: 12%Date made: June 28Time: 90 daysMaturity date: 
Proceeds: 
A. Maturity date: September 28 Proceeds: $5,778.63 B. Maturity date: September 26 Proceeds: $7,960.79 C. Maturity date: September 28 Proceeds: $7,960.79 D. Maturity date: September 26 Proceeds: $5,778.63
Solve.x2 + y2 = 130x2 - y2 = -32
A. (7, 9), (9, 7), (-7, -9), (-9, -7) B. (-7, -9), (-9, -7) C. (7, 9), (-7, 9), (7, -9), (-7, -9) D. (7, -9), (7, 9)
List the terms of the expression.-2 + 5a - 9b - 6ab
A. -2, 5a, 9b, 6ab B. -2, -5a, -9b, -6ab C. -2, 5a, -9b, -6ab D. -2, 5a, -9b, -6, ab
Solve the proportion.
= 
A. m = 2.7 B. m = 5.2 C. m = 5.8 D. m = 1.9