Divide.
A. x + 10
B. x + 9 + 
C. 
D. x + 9 - 
Answer: D
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Solve the problem.In an arithmetic sequence with first term P0 and common difference d, the sum of the first 200 terms is given by
A. 200(2P0 + 199d). B. 200(2P0 + 200d). C. 100(2P0 + 200d). D. 100(2P0 + 199d). E. none of these
The center and radius of a circle are given. Write the equation of each circle in standard form.Center: (-4, -6), r = 9
A. (x - 6)2 + (y - 4)2 = 9 B. (x - 4)2 + (y - 6)2 = 81 C. (x + 6)2 + (y + 4)2 = 9 D. (x + 4)2 + (y + 6)2 = 81
Write an equivalent fraction for the percent and, if possible, simplify.680%
A. 
B. 
C. 68
D. 
Solve the problem.The number of mobile phones sold in a given year is approximated by 
where x represents the number of years since mobile phones became readily available. The corresponding polynomial for phones is 
Find the polynomial that represents how many more mobile phones than phones were sold in a given year.
A. -4x4 + x3 + 5x2 - 9x + 11 B. 4x4 - x3 + 13x2 - 3x + 9 C. -4x4 - x3 - 2x + 10 D. -4x4 + x3 + 12x2 + 3x - 9