Find the next three terms of the arithmetic sequence.3, 1, -1, . . .
A. -3, -5, -7
B. 1, 3, 5
C. -6, -7, -10
D. -3, -6, -9
Answer: A
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Set up the iterated integral for evaluating 
over the given region D. DD is the rectangular solid whose base is the triangle with vertices at 
and 
, and whose top lies in the plane 
.
A. 
B. 
C. 
D. 
Determine whether the statement is true or false.A Pythagorean triple can be obtained as follows: Choose any four successive terms of the Fibonacci sequence. Multiply the first and fourth. Double the product of the second and third. Add the squares of the second and third. The three numbers obtained will always form a Pythagorean triple.
A. True B. False
Evaluate the integral by using multiple substitutions.
dx
A. 
+ C
B. 
(7 + sin2 x)3/2 + C
C. 
(7 + sin2 (x - 7))3/2 + C
D. (7 + cos2 (x - 7))3/2 + C
Solve the problem.The Lucas numbers are defined recursively by L1 = 1, L2 = 3, LN = LN-1 + LN-2. The value of L7/L6 is approximately
A. 1.611. B. 0.618. C. 1.17. D. 6. E. 4.584.