Respuesta :

Answer:

9x + 36

Step-by-step explanation:

Area = Length times Width, or A = l x w.  In this problem the width is 12 and the length is 3x/4 + 3 so the problem is:

12 (3x/4 + 3)

We apply the distributive property by multiplying 12 by each term in parentheses to get 9x + 36.