Find the expected value.A contractor is considering a sale that promises a profit of $23,000 with a probability of .7 or a loss (due to bad weather, strikes, and such) of $12,000 with a probability of .3. What is the expected profit?
A. $24,500
B. $11,000
C. $16,100
D. $12,500
Answer: D
Mathematics
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, y = - 
A. - 
B. 
C. - 
D. 
Mathematics
Solve the system.xy - x2 = -20x - 2y = 3
A. 
B. 
C. 
D. 
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Solve the problem.The following table shows the population (in thousands) of Anytown, USA. YEAR POPULATION 1950 120 1960 100 1970 90 1980 105 1990 130 2000 160Use a graphing calculator to fit a quadratic function f(x) to the data. Use this equation to predict the population in the year 2010.
A. 190,000 B. 2,093,000 C. 213,000 D. 195,000
Mathematics
Find the area of the geometric figure.Trapezoid
A. 60.4 sq in. B. 24.8 sq in. C. 30.2 sq in. D. 55.18 sq in.
Mathematics