Add or subtract as indicated. Simplify the result whenever possible. Write any answer that contains an improper fraction as a mixed number.
+ 
A. 
B. 
C. 
D. 
Answer: C
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Perform the indicated operation by first expressing each number in scientific notation. Write answer in scientific notation.(260,000,000)(2,000,000,000)
A. 5.2 × 1016 B. 5.2 × 1017 C. 5.2 × 1018 D. 5.2 × 1015
Solve the problem by integration.The force F (in N) applied by a stamping machine in making a certain computer part is 
where x is the distance (in cm) through which the force acts. Find the work done by the force from 
to 
A. 0.195 N? cm B. 13.5685 N? cm C. 0.0121 N? cm D. 0.0725 N? cm
Graph each system of inequalities and shade the portion of the graph represented by the solution set..
A. 
B. 
C. 
D. 
Write the first five terms of the sequence described.an = (-1)n + 7
A. 6, -8, 6, -8, 6 B. 6, 8, 6, 8, 6 C. 8, 6, 8, 6, 8 D. -7, 7, -7, 7, -7