Find the expected value of the random variable.The random variable X is the number that shows up when a loaded die is rolled. Its probability distribution is given in the table.
A. 4.15
B. 3.50
C. 0.17
D. 4.02
Answer: A
Mathematics
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Determine whether the value of 
is a solution of the inequality.
?
?
A. No B. Yes
Mathematics
Solve for the missing numbers. Markup is based on cost. Round dollar amounts to the nearest cent.
? % S $ ?
A. 
144% S $276.41
B. 
144% S $107.49
C. 
144% S $121.46
D. 
56% S $276.41
Mathematics
Find the area of the triangle.
A. A = 28.75 mm2 B. A = 57.5 mm2 C. A = 8.25 mm2 D. A = 115 mm2
Mathematics
Solve by completing the square to obtain exact solutions.x2 + 3x - 9 = 0
A. -3 ± 3
B. 
C. 
D. 
Mathematics