Test the equation for symmetry with respect to the specified axis, line, or pole.r = 4 + 4 sin ?; the x-axis (polar axis)
A. Symmetric about the x-axis
B. May or may not be symmetric about the x-axis
Answer: B
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Evaluate the sum. 
A. 80 B. 16 C. -80 D. 4096
Find the graph that matches the given system of equations.3x + y = 15y = 3x - 9
A. 
B. 
C. 
D. 
Rewrite the trigonometric expression as an algebraic expression involving the variable u. Assume that 
and that the value of the "inner" inverse trigonometric expression represents an angle ? such that 
cos (tan-1 u)
A. u
B. 
C. 
D. 
A saleswoman wants to visit eastern cities, New York City, Boston, Cleveland, and Washington, D.C. Driving distances are as shown in the figure below. What is the shortest trip starting in New York that visits each of these cities, if 
, 
varid="variable_id_field" variablename="impvar_0ed6e553dd1645028b401de33" />? Find a solution using the brute-force method.
?
?
A. 1493 mi
B. 1495 mi
C. 1500 mi
D. 1487 mi
E. 2486 mi