Answer:
Step-by-step explanation:
the volume of this prism is equal to
V=l*w*h
V=(x+1)(x)(x-3)
multiply
V=x^3-2x^2-3x
it is your first choice
[tex]V=LWH\\ \\ V=x(x+1)(x-3)\\ \\ V=x(x^2-2x-3)\\ \\ V=x^3-2x^2-3x[/tex]
