Solve.If an earthquake measured 
on the Richter scale, what was the approximate intensity of the earthquake in terms of I0? The magnitude on the Richter scale of an earthquake of intensity I is 
A. 330 ? I0
B. 630,000 ? I0
C. 500,000 ? I0
D. 63,000 ? I0
Answer: B
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Classify the system as either consistent or inconsistent.
A. Inconsistent B. Consistent
Write the reciprocal of the number.-13
A. 
B. does not exist
C. 13
D. 
Solve the system of equations. If the system has no solution, say that it is inconsistent.
A. x = 0, y = 0, z = -4; (0, 0, -4) B. x = 0, y = -4, z = 0; (0, -4, 0) C. x = 2, y = -4, z = 0; (2, -4, 0) D. inconsistent
Find all of the real zeros of the function. Give exact values whenever possible. Identify each zero as rational or irrational.f(x) = x3 + 6x2 - 22x - 48
A. -8 (rational), 8 (rational), -6 (rational)
B. -8 (rational), 
(irrational), and -
(irrational)
C. -8 (rational), 1 + 
(irrational), and 1 - 
(irrational)
D. -8 (rational), 2 + 
(irrational), and 2 - 
(irrational)