Answer
V = 2.47 m³ or 8.1 ft³.
and p = -106.7*V + 413.3
Work Step by Step
Let p = A * V + B, p is pressure and V is volume
A = $\frac{40-200}{3.5-2}$=-106.7
200=A*2+B --> B=413.3
150 = -106.7*V + 413.3 , solve for V
V = 2.47 m³ or 8.1 ft³.
and p = -106.7*V + 413.3
