Answer: Volume =[tex]180x\ ft^3[/tex]
Step-by-step explanation:
We know that the volume of a rectangular prism is given by :-
[tex]V=length\times width \times height[/tex]
Given : A room in the shape of a rectangular prism measures 15 feet by x feet by 12 feet.
Then, the volume of a rectangular prism will be :-
[tex]V=15\times x\times12\\\\\Rightarrow\ V=15\times12\times x\\\\\Rightarrow\ V= 180x[/tex]
Hence, the simplified expression for the volume (in cubic feet) of the room will be : [tex]180x\ ft^3[/tex]