A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 
. Find this earthquake's magnitude.
?
A. M = 3.8
B. M = 7.8
C. M = 6.5
D. M = 7.1
E. M = 8.7
Answer: B
Mathematics
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Write the domain of the rational function in interval notation.f(x) = 
A. (-?, ?)
B. 
? 
C. 
? 
D. 
? 
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Write the complex number shown below in trigonometric form.
a. 
b. 
c. 
d. 
e. 
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Multiply the polynomials using the special product formulas. Express the answer as a single polynomial in standard form.(2x + 3)3
A. 8x3 + 36x2 + 36x + 27 B. 4x6 + 6x3 + 729 C. 8x3 + 36x2 + 54x + 27 D. 4x2 + 12x + 9
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