Use the echelon method to solve the system.
- 
= -18
+ 
= -9
A. (0, 12)
B. (0, -12)
C. (-12, 0)
D. (12, 0)
Answer: C
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Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by the triangle with vertices (0, 0), (4, 0), (4, 2)
A. 
?
B. 
?
C. 
?
D. 64?
Provide an appropriate response.A radial line is drawn from the origin to the spiral of Archimedes r = a?, 0 ? ?, a > 0. Find the area swept out during the second revolution of the radial line that was not swept out during the during the first revolution. In other words, find the area between the first and second turns of the spiral.
What will be an ideal response?
Determine whether or not the given pair of values is a solution of the given system.x = -1, y = 24x + y = -63x + 4y = -11
A. Yes B. No
Simplify the expression using the order of operations.122 + 10 ? 6 - (11 + 2 ? 4)
A. 201 B. 185 C. 152 D. 905