Multiply.-3.82 ? (-5.5)
A. 9.32
B. -1.68
C. 21.01
D. -9.32
Answer: C
Mathematics
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A. 30
mi
B. 126 mi
C. 4
mi
D. 31 mi
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Find the sum of the first n terms of the following arithmetic sequence.a1 = 84, d = -85; n = 10
A. -3405 B. 3405 C. 4665 D. -2985
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Find the domain. Write interval notation for the answer.f(x) = 
A. (-?, 3) ? (3, ?) B. (-?, -3) ? (7, ?) C. (-?, -7) ? (-7, 3) ? (3, ?) D. (-?, -3) ? (-3, 7) ? (7, ?)
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Solve.How long will it take for the population of a certain country to triple if its annual growth rate is 2.1%? (Round to the nearest year.)
A. 52 years B. 143 years C. 1 year D. 23 years
Mathematics