Solve the polynomial inequality.x3 + 5x2 - 4x - 20 ? 0
A. [-5, -2] ? [2, ?)
B. [-5, 2]
C. [-5, ?)
D. [-2, 2] ? [5, ?)
Answer: A
Mathematics
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A. ? B. 0 C. -1 D. 1
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Solve the problem using the quadratic formula.The width of a rectangular computer screen is 3 inches more than its height. If the area of the screen is 238 square inches, find its dimensions.
A. 13 in. by 18 in. B. 14 in. by 17 in. C. 28 in. by 8.5 in. D. 15 in. by 16 in.
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Simplify the expression by using a sum or difference identity.cos(12k) cos (9k) - sin(12k) sin (9k)
A. sin(21k) B. cos(3k) C. sin(3k) D. cos(21k)
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Draw the graph of the equation and label the vertex.
A. 
B. 
C. 
D. 
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