Find an equivalent expression for the number, using the denominator indicated.
= 
A. 
B. 
C. 
D. 
Answer: C
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Make the required change in the given equation.r = 7 to spherical coordinates
A. cos ? = 
B. ?2(1 - cos ?) = 49
C. ? = 7 sin ?
D. ? = 7 csc ?
Use estimation to select the best response. Do not calculate. ? If you purchase a $595.95 item and pay for it with monthly installments for 1 year, the monthly payment is __________ (more than $50, about $50, less than $50).
What will be an ideal response?
Find the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (-1, 3)
foci at (-1 + 
, 3), (-1 - 
, 3)
vertices at (-3, -1), (9, -1)
B. center at (3, -1)
foci at (3 + 
, -1), (3 - 
, -1)
vertices at (-3, -1), (9, -1)
C. center at (3, -1)
foci at (- 
, -1), (
, -1)
vertices at (6, -1), (-6, -1)
D. center at (3, -1)
foci at (3 + 
, 3), (3 - 
, 3)
vertices at (6, -1), (-6, -1)
Evaluate. 
A) - 1/363 B) 3/1,331 C) 5/74 D) 1/363 E) - 3/131