In a gambling game, on every play, there is a 0.1 probability that you win $7 and a 0.9 probability that you lose $1. What is the expected value of this game? Is the game fair?
A. +$2; Yes
B. $0.20; Yes
C. ?$2; No
D. ?$0.20; No
Answer: D
Mathematics
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Find all real numbers that satisfy the equation.2 cos 3? = 
A. 
B. 
C. 
D. 
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Evaluate the expression.7 ? 3 - (13 - 7) ÷ 3 - (5 - 10)
A. 0 B. 10 C. 4 D. 24
Mathematics
Use a calculator to find the approximate value of the expression rounded to two decimal places.cot 0.1239
A. 0.99 B. 0.12 C. 1.01 D. 8.03
Mathematics
Solve the problem with two unknowns.During the 1998-1999 Junior Hockey League season, the Sharks played 65 games. Together, their wins and losses totaled 58. They tied 15 fewer games than they lost. How many games did they tie that season?
A. 22 games B. 36 games C. 5 games D. 7 games
Mathematics