Perimeter of a Rectangle Using Variables

What is the first step in finding the perimeter of a rectangle using variables?

• Multiply all sides together

• Add all sides together

• Subtract the shorter side from the longer side

• Divide the total length by the number of sides

In a rectangle, if one side is labeled as x + 4, what can be said about the opposite side?

• It is x + 2

• It is x + 4

• It is x

• It is 4

How do you combine like terms when calculating the perimeter of a rectangle with variables?

• Divide the coefficients of the same variable

• Subtract the coefficients of the same variable

• Multiply the coefficients of the same variable

• Add the coefficients of the same variable

If the variable x is given as 9, what is the perimeter of the rectangle with sides x and x + 4?

• 48

• 44

• 40

• 36

What is the final expression for the perimeter of a rectangle with sides x and x + 4?

• 2x + 8

• 4x + 8

• 2x + 4

• 4x + 4