Find the first term and the common ratio of the geometric sequence.an = 3
n
A. a1 = - 
, r = 
n
B. a1 = 
, r = 3
C. a1 = - 
, r = 
D. a1 = 
, r = 
Answer: D
Mathematics
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Graph.9x2 - y2 = 144
A. 
B. 
C. 
D. 
Mathematics
Rewrite the expression in terms of exponentials and simplify the results. ln (cosh 9x - sinh 9x)
A. -9 B. ln (e9x - e-9x) C. -9x D. -18x
Mathematics
Write an equivalent double integral with the order of integration reversed.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The voltage E in an electrical circuit is given by E = 5.7 cos 110?t, where t is time measured in seconds. Find the amplitude.
A. 5.7 B. 110? C. 11.4 D. 110
Mathematics