Find d2y/dx2 without eliminating the parameter.x = ln(5t), y = ln(8t)7, t > 0
A. 0
B. - 
C. 7
D. 
Answer: A
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Factor completely.8x8 - 20x6 - 12x4 - 20x3
A. x3(8x5 - 20x3 - 12x - 20) B. 4(2x8 - 5x6) - x3(12x + 20) C. 4x6(2x2 - 5) - 4x3(3x - 5) D. 4x3(2x5 - 5x3 - 3x - 5)
Determine whether A = B, A ? B, B ? A, A ? B, B ? A, or if none of these applies.A = {x | x ? N and x > 9}B = {x | x ? N and 2 < x ? 9}
A. A ? B B. None of these C. B ? A D. A ? B and A ? B
Answer the question.The points (-6, 7) and (-4, 5) are the points at which a particular diameter of a circle intersects the circle. What are the coordinates of the center of the circle?
A. (-4, 6) B. (-4, 7) C. (-5, 7) D. (-5, 6)
Find the requested area.Aunt Bea has won 9 blue ribbons for her apple pies at the State Fair. She wants to display them in a single row across a display case which is 32 inches wide. She wants to have 
inch between the ribbons, and center the display in the case. If each ribbon is 
inches wide, how wide will the border on each side be?
A. 4
in.
B. 4
in.
C. 4
in.
D. 4
in.