The graph of a polar equation is given. Select the polar equation for the graph. 
A. r = 6 cos ?
B. r = 6 sin ?
C. r = 3 + sin ?
D. r = 3 + cos ?
Answer: D
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Solve the problem.A ladder is resting against a wall. The top of the ladder touches the wall at a height of 12 feet. Find the length of the ladder if the length is 4 feet more than its distance from the wall.
A. 16 ft B. 24 ft C. 12 ft D. 20 ft
Rationalize the denominator. Assume that all variables represent positive real numbers.
A. 4
B. 
C. 
D. 4y
Fill in each blank with the appropriate response.The graph of y = - 
+ 2 can be obtained from the graph of y = 
by reflecting across the __-axis, vertically shrinking by a factor of 
reflecting across the __-axis, and shifting vertically ___ units in the _______ direction.
A. y; 
; x; 2; upward
B. x; 2; y; 
; upward
C. x; 
; x; 2; upward
D. y; 
; x; 2; downward
Simplify the rational expression. (Assume the denominator is nonzero.)
A. 
B. 
C. 
D. 