Decide whether the equation is "conditional," an "identity," or a "contradiction." Give its solution set.20k + 78 = 4(5k + 18)
A. Conditional; {all real numbers}
B. Contradiction; ?
C. Identity; {all real numbers}
D. Identity; ?
Answer: B
Mathematics
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Evaluate the integral which is given in cylindrical or spherical coordinates.
A. 
B. 
C. 
?
D. 
?
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Use the ratio test to determine if the series converges or diverges.
A. Converges B. Diverges
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Find the net cost. Round to the nearest cent.$54.80 less 10/10
A. $44.39 B. $34.80 C. $54.80 D. $43.84
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Solve the equation.3x = 81
A. 27 B. 5 C. 4 D. 3
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