Context. Revenue and orders belong side by side — one figure, two panels, so the reader compares without scrolling.
Your task. Write make_grid(revenue, orders) that creates a 1×2 grid with plt.subplots(1, 2), plots revenue as a line in the left panel and orders as a line in the right panel, and returns both fig, axes.
Example. fig, axes = plt.subplots(1, 2) — then axes[0] is the left panel, axes[1] the right.
Notes. Return the pair: return fig, axes. One line per panel.