Find an for the given geometric sequence.a1 = 2, r = 
A. an = 
(2)n-1
B. an = 2
n-1
C. an = 
(2)n
D. an = 2
n
Answer: B
Mathematics
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Sketch the surface z = f(x,y).f(x, y) = 
A. 
B. 
C. 
D. 
Mathematics
Find the indicated set given A = {-3, 0, 2, 5, 6, 11, 16, 23}, B = {-3, 0, 16, 23}, and 
A ? B
A. {-3, 0, 16, 23} B. {5, 11} C. {0, 2, 5, 6, 11, 23} D. {-3, 0, 2, 5, 6, 16}
Mathematics
Find the product.
2
A. 9x2 + 2xy+ 
y2
B. 3x2 + 4xy + 
y2
C. 9x2 + 4xy + 
y2
D. 9x2 + 
y2
Mathematics
Solve the problem.What is the domain of the sine function?
A. all real numbers
B. all real numbers, except odd multiples of 
(90°)
C. all real numbers, except integral multiples of ? (180°)
D. all real numbers from -1 to 1, inclusive
Mathematics