Find the additive inverse or opposite.-11
A. - 
B. -11
C. 0
D. 11
Answer: D
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Evaluate the improper integral or state that it is divergent. 
A. ln 2
B. ln 7
C. - 
ln 2
D. 
ln 8
Solve the problem.In a survey, people are asked to rank 6 issues such as the economy and the environment in order of importance. Replies are filed in folders, and two replies are put in the same folder if and only if they give the same ranking to all 6 issues. Find the maximum number of folders that might be needed.
A. 720 B. 6 C. 5040 D. 36
A recursion formula and the initial term(s) of a sequence are given. Write out the first five terms of the sequence.a1 = 1, an+1 = 
A. 1, 
, 20, 
, 840
B. 1, 
, 
, 
, 
C. 1, 
, 
, 
, 
D. 1, 
, 
, 
, 
Solve the differential equation.y' + 2y = 25
A. y = 25 + ce2x
B. y = 
+ e2x + ce-2x
C. y = 
+ ce2x
D. y = 
+ ce-2x