Find matrices A, X, and B such that the linear system is equivalent to the matrix equation AX = B.
A. A = 
, X = 
, B = 
B. A = 
, X = 
, B = 
C. A =
, X = 
, B = 
D. A = 
, X = 
, B = 
Answer: C
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Which of the following represents a horizontal line? ?
A. ?y = 2x B. ?x = 5 C. ?y = 0 D. ?y = 6 - x E. ?None of the above.
Find the missing value so that the line containing the two points will have the required slope.(x, -9) and (-8, -1); m = - 
A. -8 B. 0 C. -9 D. 7
Use the table to calculate the tax owed. Round to the nearest cent.
Single female, no dependents Gross income: $35,000 Adjustments: $3000 Deductions: $2000 charitable contributions $2500 state taxes Tax credit: none
A. $3120.00 B. $2108.75 C. $2032.50 D. $3690.00
The polar equation represents a conic with a focus at the pole. Identify the conic.r = 
A. hyperbola B. not a conic C. ellipse D. parabola