Perform the indicated operation.(3x7 + 6x9 - 1) + (-6x8 - 2) - (2x8 + 4x9 + 9x7)
A. 2x9 - 8x8 - 6x7 - 3
B. 10x9 - 4x8 + 12x7 - 3
C. 10x9 - 4x8 + 12x7 + 1
D. 2x9 - 4x8 + 12x7 + 1
Answer: A
Mathematics
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A. 3 ln 2 B. 6 ln 2 C. 3 ln 3 D. -3 ln 2
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Sketch the graph of the quadratic function.f(x) = 1 - (x - 1)2 
A. 
B. 
C. 
D. 
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Translate to a system of three equations; then solve.The perimeter of a triangle is 29 centimeters. Twice the length of the longest side minus the length of the shortest side is 26 centimeters. The sum of the length of the longest side and twice the sum of both the other side lengths is 43 centimeters. Find the side lengths.
A. 3 cm, 10 cm, 16 cm B. 4 cm, 11 cm, 14 cm C. 4 cm, 10 cm, 15 cm D. No solution
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Evaluate the expression, given x = -2, y = 3, and a = -4.
A. -56 B. -14 C. -1 D. 56
Mathematics