Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75
B. $2.00
C. -$3.00
D. $3.00
Answer: A
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Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. No x-intercepts, y-intercept: 
;
B. No x-intercepts, y-intercept: 
;
C. No x-intercepts, y-intercept: 
;
D. No x-intercepts, y-intercept: 
;
Solve the problem.Suppose X and Y have joint PDF 
Find the joint PDF g(x, y) of U = X - Y, V =X.
A. g(x, y) = 
B. g(x, y) = 
C. g(x, y) = 
D. g(x, y) = 
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. 320,000,000 ? I0 B. 4900 ? I0 C. 250,000,000 ? I0 D. 32,000,000 ? I0
Determine whether the relation is a function.{(-1, -6), (2, -5), (4, 9), (8, -5), (10, 3)}
A. Function B. Not a function