Add. 
A. 21,540
B. 21,620
C. 21,640
D. 20,640
Answer: C
Mathematics
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Which of the following lines are parallel? ?
A. ?y = -5x and 10x + 2y = 6 B. ?y = -x and 2y = 2x C. ?y = 3x + 6 and 3y = x + 2 D. ?y = 5 and x = 3 E. ?None of the above.
Mathematics
Solve the problem.How much work is done by a 150-lb woman as she walks up 14 steps, each with a 
-ft rise?
A. 525 ft ? lb B. 4200 ft ? lb C. 1050 ft ? lb D. 2100 ft ? lb
Mathematics
Multiply the real numbers. Write any improper fraction as a whole or mixed number where appropriate.(-6)
A. 7
B. - 2
C. - 7
D. 2
Mathematics
Solve the proportion.
= 
A. 
B. 
C. 
D. 
Mathematics