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Home > MC2 > Chapter 3 > Lesson 3.1.4 > Problem 3-38

3-38.

Find the perimeter as you did in problems 3-29 and 3-20, including x as part of the expression.

P = 4x + 4

Substitute 7 for x in the expression of the perimeter.

Evaluate the expression.
4(7) + 4 = ?

32 units.

Substitute 5.5 for x in the expression of the perimeter.

Evaluate the expression.

26 units.

See parts (a) or (b).