I am so lost here and need some help

For questions 9) and 10), consider the following version of the Solow model of economic growth in a country (which we'll call Freedonia), with output-dependent investment. Freedonia has a constant working-age population, L, of roughly 20.5 million people. Productivity, A, is 10 (units of 52/3*people'2'3*year'1). Economic output (Y) in Freedonia is given by: Y: AK'1/3lL'2/3) = 750,000K'1/3' (units omitted), Yis in units of $/year, and K is in units of 5. Capital depreciates at a rate 6 = 0.05 year'1 (depreciation = 6K). Investment occurs at rate V (investment = W). If K > $5 billion, then y = 0.25 year1. Otherwise (i.e., if K