Solve the system of equations using the inverse of the coefficient matrix.
A. x = 3, y = -1
B. x = -3, y = 1
C. x = 1, y = -3
D. x = -1, y = 3
Answer: C
Mathematics
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Find the ordinary interest or exact interest as specified. Round to the nearest cent.Marge Smith missed a state income tax payment of $644 that was due on June 30. She paid it on October 10. Find the penalty if 14% exact interest is charged on the unpaid tax.
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A. 10 B. 80 C. 40 D. 5
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Perform the indicated conversion within American units of length.35 ft = 
yd 
ft
A. 10 yd 2 ft B. 11 yd 1 ft C. 11 yd 2 ft D. 12 yd 1 ft
Mathematics