Answer:
1. its B
2. you use pemdas
3. you use the second step of pemdas
Step-by-step explanation:
1. because all of the parts are equal and there are only four equal parts.
2. Pemdas=Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).
3. Pemdas=Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).