Question 6 1 pts Let y(a) be the solution of the differential equation 4xy' - 20y = x4, x > 0, satisfying y(1) = -5. It is known that the graph of y has an inflection point at a = a, where a > 0. Find a.Question 7 1 pts The sandhill crane population in a nature park follows a logistic model (the improved Malthus' model) with a birth rate per capita of 14% per year. After a very long time, the population settled down to the carrying capacity of 19893 sandhill cranes. It is known that at time t = 10 year, there were 1521 sandhill cranes. How many sandhill cranes were there initially at time t = 0 year? Give your answer correct to the nearest integer