Solve the problem. Round your answer to the nearest tenth, if necessary.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?
A. Paul: 10 hr; Ron: 12 hr
B. Paul: 9.1 hr; Ron: 11.1 hr
C. Paul: 8 hr; Ron: 10 hr
D. Paul: 8.3 hr; Ron: 10.3 hr
Answer: B
Mathematics
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A. 7
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C. -7
D. 
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A. Domain: all real numbers; range: (-?, 3.9] B. Domain: all real numbers; range: [3.9, ?) C. Domain: [3.9, ?); range: all real numbers D. Domain and range: all real numbers
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Evaluate the integral.
A. 5 B. - 2 C. 2 D. 1
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Use a polar coordinate system to plot the point with the given polar coordinates.
A. 
B. 
C. 
D. 
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