Evaluate the expression if x = 4 and y = `y`

Perform the given operation. Round to 4 decimal places if needed. `a` ÷ `b`

Perform the given operation. `a` – `b`

Simplify.-`a“b`

Simplify.  = /  

Multiply or divide and simplify.  = /

What is |`p`|

Add or subtract and simplify.  = /

Simplify.(-`a`)`b`

Convert the mixed fraction into an improper fraction.  =  /