Answer:

Step-by-step explanation:

Here is one way to do it. See the attached image.
Answer:
x = 5
Step-by-step explanation:
(7x + 16) = 90 - 39
7x + 16 = 51
7x = 51 - 16 = 35
x = 5
Option C:
Area of the wall
square feet
Solution:
Length of the wall =
feet
Width of the wall =
feet
Area of the wall = length × width
Convert mixed fraction into improper fraction.



Convert improper fraction into mixed fraction.

Area of the wall
square feet
Option C is the correct answer.