Solve the problem.A circular fountain has a statue in its center, 8 m from the edge. What is the distance around the fountain?(Use 3.14 for ? .)
A. 50.24 m
B. 25.12 m
C. 48.24 m
D. 64 m
Answer: A
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Perform the operation and reduce the answer to lowest terms.3
? 
A. 
B. 1
C. 
D. 1
Solve the problem.Frustum of a cone
A small cone has been removed from the top of the original cone. What is the ratio of the volume of the original cone to the volume of the small cone which was removed, given that the radius of the original cone is twice the radius of the small cone?[Hint: Use similar triangles]
A. 4 : 1 B. 8 : 3 C. 8 : 1 D. 2 : 1
Solve the problem.A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. By using linear regression, the following function is obtained: 
where x is the number of hours spent in the lab and y is grade on the test. Use this function to predict the grade of a student who spends 13 hours in the lab. Number of hours spent in lab Grade (percent) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. 64.4 B. 60.4 C. 75.6 D. 67.0
Factor completely. If the polynomial is prime, then state this as your answer.1 - 81y4
A. (1 + 9y2)(1 + 3y)(1 - 3y) B. (1 + 9y2)(1 - 9y2) C. prime D. (1 + 3y)2(1 - 3y)2