Find the center and radius of the circle.(x + 1)2 + (y - 9)2 = 81
A. Center: (-1, 9); radius: 9
B. Center: (9, -1); radius: 9
C. Center: (-1, 9); radius: 81
D. Center: (9, -1); radius: 81
Answer: A
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Divide. Leave your answer in exponent form. Assume that all variables in any denominator are nonzero.
A. 
B. 
C. 8x4y3
D. 
For the given geometric sequence, find an and the sum of the terms from a1 to an. 2, 10, 50, 250 ... ; find a9
A. 390,627; 45 B. 781,250; 18 C. 250; 976,562 D. 781,250; 976,562
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400
Subtract. Use borrowing, if necessary.
A. 352 B. 356 C. 1100 D. 256