Use Cramer's rule to solve the system. If D = 0, use another method to complete the solution. x + y + z + w = 7 3x - 2z + 5w = 11-4x + 3y + w = 4 -x - y - z - w = 6
A. ?
B. 
C. 
D. 
Answer: A
Mathematics
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Find the center (h, k) and radius r of the circle. Graph the circle.(x + 1)2 + (y + 4)2 = 
A. (h, k) = (1, 4); r = 
B. (h, k) = (1, 4); r = 
C. (h, k) = (-1, -4); r = 
D. (h, k) = (-1, -4); r = 
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Determine if the function is bounded above, bounded below, bounded on its domain, or unbounded on its domain.y = 8x - x3
A. Bounded B. Bounded above C. Bounded below D. Unbounded
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Add or subtract as indicated.5 - (-27)
A. -22 B. 22 C. 32 D. -32
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Multiply using the special product rules for binomials.(3x - 11)2
A. 3x2 + 121 B. 3x2 - 66x + 121 C. 9x2 - 66x + 121 D. 9x2 + 121
Mathematics