Determine whether (f ? g)(x) = x and whether (g ? f)(x) = x.f(x) = 
, g(x) = x
A. No, yes
B. Yes, no
C. No, no
D. Yes, yes
Answer: C
Mathematics
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Solve the inequality. Write the solution set in interval notation.-2x2 + 8x ? 0
A. (-?, 0] ? 
B. 
? [0, ?)
C. 
D. 
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Sketch a graph of the function.
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Simplify the expression. Write the result using positive exponents only.4-3
A. 
B. -64
C. 
D. 64
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Solve the problem.A parallelogram has an area of 2x2 + 7x - 39. Use factoring to rewrite this expression.
A. (2x - 13)(x + 3) B. (2x - 13)(x - 3) C. (2x + 13)(x - 3) D. (2x + 13)(x + 3)
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