Currently, there are 100 plants in age class 0, 50 plants in age class 1, 25 plants in age class 2, and 10 plants in age class 3. Based on previous work, you know that the expected survival rates are S0=0.4, S1=0.6, S2=0.8, and S3=0. Fecundities are F0=0, F1=0, F2=10, F3=5. What is the expected total population size two generations later? [medium]