Let 
. Find the value of the function.
?
Fill in the blank(s) with the appropriate word(s).
1,873
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Solve the problem.A commercial building contractor is trying to decide which of two projects to commit her company to. Project A will yield a profit of $50,000 with a probability of 0.6, a profit of $83,000 with a probability of 0.3, and a profit of $10,000 with a probability of 0.1.Project B will yield a profit of $100,000 with a probability of 0.1, a profit of $66,000 with a probability of 0.7, and a loss of $20,000 with a probability of 0.2.Find the expected profit for each project. Based on expected values, which project should the contractor choose?
A. Project A: $55,900 Project B: $60,200 Contractor should choose project B B. Project A: $46,900 Project B: $52,200 Contractor should choose project B C. Project A:$55,900 Project B: $52,200 Contractor should choose project A D. Project A: $47,666 Project B: $48,666 Contractor should choose project A
Solve the problem.A railroad tunnel is shaped like half of an ellipse. The height of the tunnel at the center is 11 ft and the vertical clearance must be 9 ft at a point 20 ft from the center. Find an equation for the ellipse. 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Calculate. Round to two decimal places if necessary.
A. 45 B. 8100 C. 90 D. 180
Evaluate the expression.
A. 
B. 
C. 
D. 