Solve using the elimination method. If the system has no solution or an infinite number of solutions, state this.0.9x - 0.3y = 8.1-0.9x - 0.1y = -5.7
A. No solution
B. (-6, 7)
C. Infinite number of solutions
D. (7, -6)
Answer: D
Mathematics
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A. [6, 10]
B. (6, 10)
C. ?
D. [6, 9]
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A. 0, 
B. ± 
C. 0, ± 11
D. 0, ± 
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Solve the problem.You withdraw $63 a week from a savings account for 6 weeks. What is the overall change in the account?
A. -$69 B. $378 C. $69 D. -$378
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Evaluate the determinant.
A. -315 B. 315 C. 266 D. -364
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