If the current size of the renounce to 60, how much investment would then need to be to mygenerate the back level? What if the current resource dock is pop From the picture of the production fiction (Figure JJJ, and your answer to cicicie 183, what can you conclude about sustainability of higher and higher stocks? Explain your warmer The marginal productivity of investment is the additional stock that would read from a small increase in inwimmer ffor compe, a mil penal Graph for marginal pruletting function S/5. when & s the investment level Can you explain its shape? Explain the answers that you got in exercise 18.6 in light of what you concluded in exercise 187. As it correct to say "It becomes Merceningly difflent to asiain larger moung lyck"