Select the curve represented by the parametric equations.
?
?
A. ?
?
B. ?
C. ?
D. ?
E. ?
Answer: B
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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = ?/6 to x = ?/2. The cross sections perpendicular to the x-axis are circular disks with diameters running from the curve 
to the curve 
A. (
- 1) ? + 
B. 
- 
C. (2
- 2) ? - 
D. 
- 
Solve the problem.At the local convenience store, 6 bags of chips and 3 containers of dip cost $30. However, 7 bags of chips and 5 containers of dip cost $41. What is the cost of one bag of chips and one container of dip?
A. chips = $5; dip = $5 B. chips = $4; dip = $3 C. chips = $3; dip = $4 D. chips = $3.50; dip = $3.50
Solve the system.
+ 
+ 
= - 1
- 
+ 
= - 
-17.0px;" />
+ 
+ 
= - 1
A. 
B. {(1, -3, -3)}
C. {(-1, 3, 3)}
D. {(-1, 3, -3)}
Graph the ellipse.x2 + 4y2 = 20
A. 
B. 
C. 
D. 