Write the number as a product of prime numbers.1245
A. 15 ? 83
B. 32 ? 83
C. 52 ? 83
D. 3 ? 5 ? 83
Answer: D
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Find the center, transverse axis, vertices, foci, and asymptotes of the hyperbola.
- 
= 1
A. center at (0, 0)
transverse axis is x-axis
vertices at (-7, 0) and (7, 0)
foci at (-11, 0) and (11, 0)
asymptotes of y = - 
and y = 
B. center at (0, 0)
transverse axis is y-axis
vertices at (0, -7) and (0, 7)
foci at (- 
, 0) and (
, 0)
asymptotes of y = - 
and y = 
C. center at (0, 0)
transverse axis is x-axis
vertices at (-7, 0) and (7, 0)
foci at (- 
, 0) and (
, 0)
asymptotes of y = - 
and y = 
D. center at (0, 0)
transverse axis is x-axis
vertices at (-11, 0) and (11, 0)
foci at (- 
, 0) and (
, 0)
asymptotes of y = - 
and y = 
An earthquake in the Japan in 2011 was about 109 times as intense as the reference intensity. Find the Richter number for that earthquake.
NOTE: Seismologists use the Richter scale to measure and report the magnitude of earthquakes. The equation 
compares the intensity I of an earthquake to a minimum or reference intensity I0.
A. 109 B. 10 C. 9 D. none of these
Solve.
+ 
= 
A. No solution B. 4, 3 C. -6, 5 D. -3, -4
Use the graph to find the vertical asymptotes, if any, of the function. 
A. x = -1, x = 1, y = 1 B. x = -1, x = 1, x = 0, y = 1 C. x = -1, x = 1 D. x = -1, x = 1, x = 0