Write an expression for the general or nth term, an, of the arithmetic sequence.3, -7, -17, -27, . . .
A. an = -10(n+1) + 3
B. an = -10n + 3
C. an = -10n + 13
D. an = -10n- 13
Answer: C
Mathematics
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Find the standard deviation for the given data. Round your answer to one more decimal place than the original data.10.8, 15.3, 48.6, 45.1, 21.3, 19.9
A. 4320.2 B. 15.98 C. 46.9 D. 5596.4
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Solve.The sum of a number and 1 times its reciprocal is -2. Find the number.
A. 0 B. -1 C. 1 D. -2
Mathematics
Find the net cost. Round to the nearest cent.$179.40 less 20/20/20
A. $91.85 B. $119.40 C. $107.64 D. $71.76
Mathematics
Perform the operation indicated.
+ 
A. 
B. 
C. 
D. 
Mathematics