Find each sum or difference. -12.31 - (2.13)

Multiply or divide as indicated. Write answers in lowest terms as needed. $\frac{2}{5}÷30$

Use the quotient rule to simplify the expressions in Exercises 45-46. √(121/4)

Determine whether each statement is true or false. {2, 5, 8, 9} = {2, 5, 9, 8}

Determine whether each statement is true or false. {3, 0, 9, 6, 2} = {2, 9, 0, 3, 6}

Multiply or divide as indicated. Write answers in lowest terms as needed. $8÷\frac{4}{9}$

Find each sum or difference. |-8 - 6|

Determine whether each statement is true or false. {5, 8, 9} = {5, 8, 9, 0}