Find the sum.
+ 
A. 0
B. 
C. - 
D. 
Answer: A
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Find the unknowns on the right side of the partial fraction decomposition.
= 
+ 
+ 
A. A = -7, B = 
, C = 
B. A = 7, B = 
, C = 
C. A = -7, B = - 
, C = - 
D. A = 7, B = - 
, C = - 
Use the integral test to determine whether the series converges.
A. converges B. diverges
The Laplace transform F(x) of a function f(t) is given by the formula.
?
?
Find F(x) if 
(n constant).
?
A. 
B. 
C. 
D. 
E. 
Write an algebraic equation and use it to solve the problem.A hot air balloon spent several minutes ascending. It then stayed at a level altitude for two times as long as it had ascended. It took 4 minutes less to descend than it did to ascend. The entire trip took one hour and 8 minutes. For how long was the balloon at a level altitude?
A. 14 minutes B. 36 minutes C. 18 minutes D. 32 minutes