Perform the indicated operation.(-3x4 + 4x6 + 7 + 9x5) - (3 + 6x5 + 9x6 - 7x4)
A. 13x6 + 15x5 - 10x4 + 4
B. -5x6 + 15x5 - 10x4+ 10
C. -5x6 + 3x5 + 4x4+ 4
D. 13x6 + 15x5 - 10x4 + 10
Answer: C
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Solve the problem.A piece of molding 185 cm long is to be cut to form a rectangular picture frame. What dimensions will enclose the largest area?
A. 13.6 cm × 13.6 cm B. 13.6 cm × 46.25 cm C. 37 cm × 37 cm D. 46.25 cm × 46.25 cm
Solve. Write the solution set using set-builder notation and using interval notation. Graph the solution set. 11x + 9 ? 10x + 1
A. {x| x ? -8}; (-?, -8]
B. {x| x < 11}; (-?, 11)
C. {x| x ? -8}; [-8,?)
D. {x| x > 11}; [11, ?)
Use the graph of the function to estimate the x-intercepts.g(x) = 2x2 + 5x - 3
A. x = -3, x = -0.5 B. x = -3, x = 0.5 C. x = -2, x = 3 D. x = -0.5, x = 3
Find the vertex, the focus, and the directrix of the parabola.y = x2 + 10x + 26
A. V: (-5, 1); F 
; D: x = 
B. V: (-5, 1); F 
; D: y = 
C. V: (-5, 1); F (-5, 2); D: y = 0
D. V: (-5, 1); F 
; D: y = 