Solve.log2 x = -3
A. 
B. -1
C. -6
D. 
Answer: A
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Factor the four-term polynomial by grouping.7x - 63 + xy - 9y
A. (y - 9)(7x + y) B. (x - 9y)(7 + y) C. (x - 9)(7 + y) D. (y - 9)(x + 7)
Provide an appropriate response.If the graphs of a system of two equations are both parabolas, what are the possible numbers of solutions (with real coordinates) of this system?
What will be an ideal response?
Solve.A cube has a surface area of 6x2 + 108x + 486. Find the length of a side.
A. x - 9 B. x + 9 C. x + 54 D. 6(x + 9)
Solve the problem.An object is propelled upward at an angle ?, 45° < ? < 90°, to the horizontal with an initial velocity of v0 feet per second from the base of a plane that makes an angle of 45° with the horizontal. If air resistance is ignored, the distance R that it travels up the inclined plane is given by the function R(?) = 
[sin(2?) - cos(2?) - 1]. Show that R(?) = 
[sin ?(cos ? + sin ?) - 1].
What will be an ideal response?