Quick questions on Straight-line and declining-balance depreciation for HSC Maths Standard 2

Declining-balance value can be read straight off $V = P(1 - r)^n$, but a question may instead ask you to complete a year-by-year schedule, and seeing the schedule built makes the formula concrete. The key move is that each year's closing value becomes the next year's opening value: you take $25\%$ off, carry the remainder down, and repeat. The four panels below build the schedule for the $56000 Hilux at a $25\%$ declining-balance rate.