Evaluate the expression for the given values. Expression your answer as a fraction unless otherwise indicated.
x = 8, y = 6
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the equation by completing the square.w2 + 12w = - 27
A. 36, -9 B. ± 3 C. 3, 9 D. -3, -9
Mathematics
Convert the mass as indicated.1.345 decigrams to grams
A. 13.45 g B. 0.1345 g C. 134.5 g D. 0.01345 g
Mathematics
Subtract the polynomials. Express your answer in standard form.17x3 - 19x2 
A. 20x3 - 33x2 B. 14x3 - 33x2 C. 20x3 - 5x2 D. 14x3 - 5x2
Mathematics
Solve the problem.The cost C of producing t units is given by C(t) = 2t2 + 7t, and the revenue R generated from selling t units is given by 
For what values of t will there be a profit?
A. t > 6 B. t > 8 C. t > 0 D. t > 7
Mathematics