Write the equation of the circle with the given center and radius.center (0, 5), radius 11
A. x2 + (y - 5)2 = 121
B. (x + 5)2 + y2 = 121
C. (x - 5)2 + y2 = 121
D. x2 + (y + 5)2 = 11
Answer: A
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A. 
B. 
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D. 
Solve the problem.The displacement y (in cm) of an object hung vertically from a spring and allowed to oscillate is given by the equation 
where t is the time (in s). By multiplication of series, find the first three terms of the expansion for the displacement of the oscillating object.
A. 6t + 2.4t2 - 1.76t3 + . . . B. 6t + 1.2t2 + 0.12t3 + . . . C. 6t + 1.2t2 - 0.88t3 + . . . D. 6t + 0.6t2 - 0.92t3 + . . .
Write the first five terms of the arithmetic sequence with the given term and common difference.a1 = 6, d = 3
A. 6, 9, 12, 15, 18 B. 9, 12, 15, 18, 21 C. 6, 8, 10, 12, 14 D. 0, 6, 9, 12, 15
Simplify the difference.(6a + 9) - (-a - 2)
A. 5a + 7 B. 7a + 7 C. 7a + 11 D. 6a + 7