A student investigates the rate of the gas-phase decomposition of a compound \(\text{X}\) at \(300\text{ K}\) in a rigid container:

\[ \text{X(g)} \rightarrow \text{Y(g)} + \text{Z(g)} \]

The student monitors the concentration of \(\text{X}\) over time and generates the three plots shown below.

Based on the graphs, what is the order of the reaction with respect to \(\text{X}\), and what is the total time required for \([\text{X}]\) to decrease from an initial concentration of \(0.40\text{ M}\) to \(0.050\text{ M}\)?