Final answer:
The question involves adding parentheses to the expression 2 • 15 • 4. Options A and B show correct placements of parentheses, changing the order of multiplication. Option C is redundant, and Option D is incorrect due to misplaced parentheses.
Step-by-step explanation:
The question asks to reformat the expression 2 • 15 • 4 by adding parentheses. Adding parentheses helps to indicate which operations should be performed first in accordance with the order of operations. Here are the options reformatted with parentheses:
- A) (2 • 15) • 4
- B) 2 • (15 • 4)
- C) (2 • 15 • 4)
- D) (2 • 15 •) 4 - This option contains an error as there is a misplaced parenthesis.
Option A and B are correct ways to add parentheses, resulting in either 2 • 15 or 15 • 4 being calculated first. Option C is redundant as it simply encloses the entire original expression, without changing the order in which the operations occur. Option D is incorrect due to the incorrect placement of the closing parenthesis.