Question 113075
:
You know the perimeter = 2L + 2W
Therefore
P = 2(3x – 4) + 2(7x + 10)
:
Multiply what's inside the brackets
P = 6x - 8 + 14x + 20
:
Combine like terms:
P = 6x + 14x - 8 + 20
:
P = 20x + 12