Use the substitution method or the elimination method to solve the system. If the system has infinitely many solutions, express the ordered pair in terms of x or y. x + 7y = 75x - 2y = -2
A. (1, 1)
B. (1, 0)
C. (0, 0)
D. (0, 1)
Answer: D
Mathematics
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Solve.In a particular city, 
of the residents subscribe to the local newspaper. Write this fraction as a percent.
A. 0.0002% B. 0.002% C. 0.02% D. 0.2%
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Solve the problem.The disk (x - 4)2 + y2 ? 1 is revolved about the y-axis to generate a torus. Find its volume. (Hint: 
= 
?, since it is the area of a semicircle of radius 1.)
A. 8?2 B. 2?2 C. 4?2 D. 4?
Mathematics
Simplify the root. 
A. - x2
B. - 
C. x2
D. 
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The graph below is one complete cycle of the graph of an equation containing a trigonometric function. Find an equation to match the graph. If you are using a graphing calculator, graph your equation to verify that it is correct.
?
What will be an ideal response?
Mathematics