Solve the problem.The magnitude of an earthquake, measured on the Richter scale, is given by 
where I is the amplitude registered on a seismograph located 100 km from the epicenter of the earthquake, and I0 is the amplitude of a certain small size earthquake. An earthquake measured 4.5 on the Richter scale. Express this reading in terms of I0.
A. 31,623 I0
B. 25,119 I0
C. 90 I0
D. 3162 I0
Answer: A
Mathematics
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A. -2.291 B. -22.91 C. -22.9 D. -22.01
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Find the sum of the infinite geometric series, if it exists.1 - 
+ 
- 
+ . . .
A. 
B. - 
C. does not exist
D. 
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Solve.log2 8 = x
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