First estimate the answer. Then add or subtract to find the exact answer. Write answer as a mixed number. 
A. Estimate: 8; Exact: 7
B. Estimate: 7; Exact: 5
C. Estimate: 7; Exact: 7
D. Estimate: 8; Exact: 7
Answer: D
Mathematics
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For the given angle, name the quadrant in which the terminal side lies.-673°
A. I B. II C. III D. IV
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Find the domain of the function.f(x) = 
A. {x|x > 0}, or (0, ?) B. {x|x < 0}, or (-?, 0) C. {x|x ? -9}, or (-?, -9) ? (-9, ?) D. {x|x ? 9}, or (-?, 9) ? (9, ?)
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Solve the problem. Round your answer to three decimals.What annual rate of interest is required to triple an investment in 7 years?
A. 8.497% B. 10.409% C. 16.993% D. 15.694%
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Solve the equation.
= 
A. 
B. 
C. 
D. 
Mathematics