ANSWER
![3840 {ft}^{3}](https://tex.z-dn.net/?f=3840%20%7Bft%7D%5E%7B3%7D%20)
EXPLANATION
The room represents a rectangular prism or a cuboid.
The dimensions of the room are 30 feet by 16 feet by 8 feet(height).
The volume of a rectangular prism is
![= base \: area \: \times \: height](https://tex.z-dn.net/?f=%20%3D%20base%20%5C%3A%20area%20%5C%3A%20%5Ctimes%20%5C%3A%20height)
Substitute the given values
![= 30 \times 16 \times 8 {ft}^{3}](https://tex.z-dn.net/?f=%20%3D%2030%20%5Ctimes%2016%20%5Ctimes%208%20%7Bft%7D%5E%7B3%7D%20)
Simplify:
![= 3840 {ft}^{3}](https://tex.z-dn.net/?f=%20%3D%203840%20%7Bft%7D%5E%7B3%7D%20)
Hence the cubic feet of air in the room is 3,840ft³.
Y=1/2 x +4
Slope = x coefficient = rise/run = 2/4=1/2
Y intercept= constant = 4
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