In an economy with population growth at rate n but without any technological progress, the change in capital stock per worker is given by the equation: (If you see a rectangle in the option, it means your laptop cannot display the formula properly. The rectangle should be lowercase Greek alphabet delta, i.e. the depreciation rate.) k=sf(k)k.k=sf(k)(0+n)k.k=sf(k)+(0+n)k.k=sf(k)+k..