Find the sum or difference, and write in lowest terms, if necessary. + 

A.  
B.
C. -  
D. -  

Answer: C

Mathematics

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Multiply mentally.

A. 9x4 - 
B. 9x2 + 132x - 
C. 9x2 - 132x - 
D. 9x2 - 

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Find an antiderivative of the given function. csc2 

A. 2 cot 
B. -2 cot 
C.  csc 2  cot 
D.  cot 

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Solve the problem.Ron takes two hr more time than Paul to mow the lawn. Working together they can mow the lawn in . How long does it take each of them working alone? Round to the nearest tenth, if necessary.

A. Paul: 8 hr; Ron: 10 hr B. Paul: 10 hr; Ron: 12 hr C. Paul: 8.3 hr; Ron: 10.3 hr D. Paul: 9.1 hr; Ron: 11.1 hr

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Insert < or > to make the statement true.|-2| _____ |-17|

A. > B. <

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