Evaluating a rational expression and order of operations

What is the value of B that needs to be substituted into the expression?

• 10

• 7

• 8

• 9

Why does the teacher suggest using parentheses when substituting values?

• To make it easier to read

• To avoid calculation errors

• To remember the substituted values

• To make the expression look neat

What is the result of 2 multiplied by 16 in the expression?

• 32

• 28

• 30

• 36

What is the correct order of operations to simplify the expression?

• Multiplication, Division, Addition, Subtraction

• Subtraction, Addition, Multiplication, Division

• Addition, Subtraction, Multiplication, Division

• Division, Multiplication, Addition, Subtraction

What is the final result of the expression after simplification?

• 5

• 6

• 7

• 8