Choose the polar equation that matches the graph.
A. r = sin ? + sin2 ?
B. r = ? cos ?
C. r = ? sin ?
D. r = cos ? + cos2 ?
Answer: C
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Provide an appropriate response.A respiratory therapist works for a for-profit hospital that allows her to contribute into a 401K plan for retirement. The maximum that she can contribute is 15% of her salary. If she makes $42,000 in annual salary, what is the maximum that she can have deducted each month?
Fill in the blank(s) with the appropriate word(s).
Give the coordinates of the points shown on the graph.
A. C = (7, 2), D = (-6, 5) B. C = (-7, 7), D = (5, -6) C. C = (-7, -6), D = (7, -6) D. C = (-7, 7), D = (-6, 5)
The figure below is a regular hexagon ABCDEF with center O. (P, Q, R, S, T, and U are the midpoints of the sides.)
A glide reflection sends the point P to the point Q and the point U to the point T. The axis of reflection for this glide reflection is
A. the line through P and Q. B. the line through C and F. C. the line through T and U. D. the line through R and S. E. none of these
The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r(1 - 2 cos ?) = 1
A. 
= 2 + x
B. 
= 1 + 2x
C. x2 + y2 = 2 + x
D. x2 + y2 = 1 + 2x