Answer:
A. 300-1 and B. 300-2/ represent the sale price of the bicycle in dollars.
C. 300-(1-1) simplifies to 300-0, which is the same as 300, the regular price of the bicycle.
D. 300-4/1 simplifies to 300-4, which is 296, not the sale price.
E. 300--300 simplifies to 600, which is not the sale price.