A rectangular gym has an area of 4x^2ft^2.The school decides to add a new weight room.The total area of the gym and weoom is (4x^2 480)ft^2.What does the constant term represent in terms of this problem?

a. The gym has an area of 480ft^2.

b. The new weight room has an area of 4x^2ft^2.

c. The new weight room has an area of 480 ft^2.

d. The new weight room can hold 480 people.