Solve the problem.An earthquake had an intensity 10 4.4 times more powerful than a reference level earthquake, or 
What was the magnitude of this earthquake on the Richter scale? 
A. 14.4
B. 4.4
C. 5.6
D. 10.1
Answer: B
Mathematics
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Find the inverse of the function.f(x) = (x - 8)2, x ? 8
A. f-1(x) = 
B. f-1(x) = -
+ 8
C. f-1(x) = 
D. f-1(x) = 
+ 8
Mathematics
Evaluate the logarithm.log8
A. -8 B. -2 C. 8 D. 2
Mathematics
Solve the problem.Encode the following message: Do not give upBreak the message into groups of two letters and use the matrix M = 
A. 
, 
, 
, 
, 
B. 
, 
, 
, 
,
, 
, 
C. 
, 
, 
, 
, 
, 
, 
D. 
, 
, 
, 
, 
, 
, 
Mathematics
Solve the system of equations. Let z be the parameter.-3x - 6y - 5z = -3-5x + y + 3z = 7
A. 
B. (39 - 13z, -36 + 39z, z)
C. 
D. 
Mathematics