Observe the squares... 13 is attainable owing to it being expressible as the sum of two squares (integers) 9 + 4.. utilize (0,3) and (2,0)... derive the square roots and assign them to different coordinate axes... for a more straightforward value. However, no such representation exists for 15... There is a representation available for 18... 18 = 3^2 + 3^2... try (0,3), (3,0), (3,6), (6,3).
Regardless of the value of M, it will correspond to 18m squared.
30 candles equal 100%
30% of 100% equals 9 candles from a total of 100 candles
After extinguishing 30% of the candles, 9 will remain lit.