Solve the problem.If you are dealt two cards successively (without replacement) from a standard 52-card deck, find the probability of getting a king on the first card and a queen on the second.
A. 
B. 
C. 
D. 
Answer: B
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Multiply.
(
+ 
)
A. 40 - 16i B. 16 + 40i C. -16 - 40i D. -16 + 40i
Find the constant of variation and construct the function that is expressed in each statement.y varies inversely as x: y = 0.3, when x = 0.8
A. y = 0.38x
B. y = 
C. y = 
D. y = 
Graph the system of inequalities. Shade the region that represents the solution set.x2 + y ? 1x2 - y ? 2
A. 
B. 
C. 
D. 
Solve the problem.Use the formula M = log (I/I0), where the magnitude of an earthquake on the Richter scale is based on I, the measurement of a seismic wave, and I0, the measurement of a seismic wave of a level zero earthquake with the same epicenter. An earthquake was recorded as 107.5 times more powerful than a reference level zero earthquake. What was the magnitude of this earthquake on the Richter scale? Round to the nearest tenth.
A. 2.5 B. 7.5 C. 17.5 D. 17.3