Solve.An earthquake had an intensity 108.4 times more powerful than a reference level earthquake, or 
What was the magnitude of this earthquake on the Richter scale? 
A. 1.6
B. 19.3
C. 18.4
D. 8.4
Answer: D
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Write one or more inequalities that describe the set of points.The rectangular solid in the first octant bounded by the planes x = 1, x = 3, y = 2, y = 3, 
and 
(planes excluded)
A. The given planes do not form a rectangular solid B. x < y < z C. 1 < x < 3; 2 < y < 3; 2 < z < 6 D. x < 1, x > 3; y < 2, y > 3; z < 2, z > 6
Evaluate the line integral of f(x,y) along the curve C.f(x, y) = 
, C: y = x2, 0 ? x ? 3
A. 0
B. 
C. 243
D. 
Determine a general formula (or formulas) for the solution to the equation.sin ? = 1
A. ? = 
+ 2n?
B. ? = 
+ 2n?
C. 2n?
D. ? = ? + 2n?
Use Cramer's rule to determine if the system is inconsistent system or contains dependent equations. 4x - y + 2z = 1 3x + 5y - z = 0-6x - 10y + 2z = 0
A. system is inconsistent B. system contains dependent equations