Factor completely.2x2 - 18x + 40
A. 2(x - 20)(x + 1)
B. (2x - 8)(x - 5)
C. Prime
D. 2(x - 4)(x - 5)
Answer: D
Mathematics
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Find an equation for the parabola described.Vertex at (6, 5); focus at (4, 5)
A. (x - 5)2 = 4(y - 5) B. (x - 5)2 = -4(y - 5) C. (y - 5)2 = 8(x - 6) D. (y - 5)2 = -8(x - 6)
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Find the sum.-5 + 7
A. 2 B. -2 C. -12 D. 12
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Solve the problem.A section of roller coaster track has the dimensions shown in the diagram. Find the grade of the track, which is the slope written as a percent. 
A. 9.18% B. 3% C. 34% D. 39%
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Write the equation as an equivalent exponential equation.log2(8) = 3
A. 83 = 2 B. 32 = 8 C. 23 = 8 D. 28 = 3
Mathematics