Solve.Find the exact circumference of the circle. Then use the approximation 3.14 for ? and approximate the circumference.
A. 16? mi, 50.24 mi
B. 8? mi, 25.12 mi
C. 64? mi, 200.96 mi
D. 16? mi, 50.4 mi
Answer: A
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Solve the problem.The following figure shows the shape and dimensions of a small dam. Assuming the water level is at the top of the dam, find the total force on the face of the dam. Round to the nearest whole number. 
A. 470,400,000 N B. 58,800,000 N C. 117,600,000 N D. 235,200,000 N
Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.x2 + 3x
A. 
; 
2
B. 0; 
2
C. 0; 
2
D. 
; 
2
Find the expected value.Suppose that 1,000 tickets are sold for a raffle that has the following prizes: one $300 prize, two $100 prizes, and one hundred $1 prizes. What is expected value of a ticket?
A. $300 B. $0.60 C. $1 D. $100
Given that the pair of triangles is similar, find the missing length. 
A. x = 5 B. x = 20 C. x = 15 D. x = 16