Use the graph to find the intervals on which it is increasing, decreasing, or constant.
A. Increasing on (-?, ?)
B. Increasing on 
and 
; decreasing on 
C. Decreasing on 
; increasing on 
D. Decreasing on 
and 
; increasing on 
Answer: D
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Test the equation for symmetry with respect to the given axis, line, or pole.r = 2 - 4 sin ?; the polar axis
A. May or may not be symmetric with respect to the polar axis B. Symmetric with respect to the polar axis
Verify the identity.
= cot 
What will be an ideal response?
Write an algebraic expression for each quantity using the given variable.The second angle of a triangle is triple the first. The third angle of the triangle is 
smaller than the first. Use the letter x.
A. x = first angle; 3x = second angle; x + 38 = third angle B. x = first angle; 3x = second angle; 38 - x = third angle C. x = first angle; 3x = second angle; x - 38 = third angle D. x = first angle; x - 38 = second angle; 3x = third angle
Find the x- and y- intercepts.
x + y = 8
A. (12, 0), (0, 8) B. (0, 0), (0, 8) C. (8, 0), (0, 12) D. (12, 0), (1, 8)