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Your objective for this section is:
 Learn to use the Order of Operations to evaluate expressions, and
 Learn to use Formulas.
You should attempt these exercises without help, using only pencil and paper (calculator if absolutely necessary).
If you cannot answer these with confidence, you should bring it up in class. I assure you, you are not the only one.
Exercise 1  Write an expression that represents the perimeter of the rectangle

Sample Answer 1: L + L + W + W
Sample Answer 2: 2L + 2W
Sample Answer 3: 2(L + W) 
Exercise 2  Write an expression that represents the perimeter of the rectangle

Sample Answer 1: L + L + W + W
Sample Answer 2: 2L + 2W
Sample Answer 3: 2(L + W) 
Exercise 3  Write an expression that represents the perimeter of the rectangle

Sample Answer 1: L + L + W + W
Sample Answer 2: 2L + 2W
Sample Answer 3: 2(L + W) 
Exercise 4  Write an expression that represents the perimeter of the rectangle

Sample Answer 1: L + L + W + W
Sample Answer 2: 2L + 2W
Sample Answer 3: 2(L + W) 