The answer to your problem is
For this case the new area is the sum of two areas:
Area = rectangular gym + weight room
Area = (4x² + 520) ft²
In addition, we know that
rectangular gym = 4x ^ 2 ft²
Therefore, the term 520 represents a new weight room
answer
The constant term represent a new weight room
19 days are left in a year because 1 week=7 days which means 2 weeks=14 days 14 +5=19
