Write the equation of a circle with the given center and radius.Center at (0, -6); Radius 9
A. x2 + (y + 6)2 = 81
B. (x + 6)2 + y2 = 81
C. x2 + (y - 6)2 = 9
D. (x - 6)2 + y2 = 81
Answer: A
Mathematics
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Write as a rate in simplest form. Express your answer as a fraction.155 miles per 15 gallons
A. 
B. 
C. 
D. 
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Solve.A credit company allocates 8-digit account numbers such as 1122-3421 where the digits 1 through 9 are used. How many different account numbers can there be?
A. 220,345 B. 13,440 C. 40,320 D. 43,046,721
Mathematics
Convert to decimal notation.
A. 0.
B. 2.1
C. 0.5
D. 0.4
Mathematics
The bar graph shows the times it took five men to run a mile. Use the table to answer the question. 
The fastest mile time is how much less time than the slowest mile time?
A. 1.02 min B. 1.13 min C. 0.71 min D. 1.49 min
Mathematics