Find the domain and the range of the relation.
A. domain: [4, ?)
range: (?, -?)
B. domain: [4, ?)
range: (-?, ?)
C. domain: (?, -?)
range: [4, ?)
D. domain: (-?, ?)
range: [4, ?)
Answer: B
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Find the length of the curve.The circle r = 6 sin ?
A. 3? B. 36? C. 12? D. 6?
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = (4x - 2y)5
A. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
c ? 0
B. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
c ? 0
C. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
D. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
Find the length of the curve.The spiral r = 4?2, 0 ? ? ? 2
A. 
((?2 + 1)3/2 - 1)
B. 
C. 
?5
D. 
Assume that the expressions given are denominators of fractions. Find the least common denominator. 6y + 42, y2 - 49, y
A. y(y + 7)(y - 7) B. 42y(y2 + 7)(y2 - 7) C. 6y(y + 7)(y - 7) D. 42y(y + 7)2(y - 7)