Find the expected value for the random variable.A business bureau gets complaints as shown in the following table. Find the expected number of complaints per day. 
A. 2.73
B. 3.01
C. 2.85
D. 2.98
Answer: D
Mathematics
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Find the roots of the equations.
= 
A. 3 B. 0 C. -6 D. No solutions
Mathematics
Graph the line described.Through (-3, -4); m = 3
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A 9-ft. board is cut into 2 pieces so that one piece is 5 feet longer than 3 times the shorter piece. If the shorter piece is x feet long, find the lengths of both pieces.
A. shorter piece: 15 ft; longer piece: 32 ft. B. shorter piece: 1 ft.; longer piece: 8 ft. C. shorter piece: 4.5 ft; longer piece: 27 ft. D. shorter piece: 22 ft; longer piece: 27 ft.
Mathematics
Write an inequality of the form 
or of the form 
so that the inequality has the given solution set.(-8, 10)
A. 
< 9
B. 
< 10
C. 
< -8
D. 
> 9
Mathematics