$\"\"$

The perimeter of a rectangle is given by $\"\"$ .

Where the l is the length of rectangle and w is width.

The perimeter of a rectangle is given by 30 inches.

Diagram indicates length $\"\"$ width $\"\"$ \ \ $\"\"$

Substitute the values in perimeter formula

$\"\"$ (Substitute $\"\"$ )

$\"\"$ (Multiply: $\"\"$ )

$\"\"$

The perimeter standard form $\"\"$ .