Need help with macroecon thanks

(a) If a: grows at 3% and y grows at -2% and w = mfg, calculate the growth rate of w. (b) The president of the World Bank has asked you to calculate the average popula tion growth rate of Hungary from 1970 to 2010. You know the population in 1970 was about 10.4 million and in 2010 about 9.5 million. What is the average annual growth rate? (c) Suppose 3;; = (1.04)t and y; = (1.02)t. z; = $353,195. Calculate the growth rate of zt. ((1) Suppose mt grows at 2% per year and y; grows at 5% per year, with 2:0 = 2 and ya = 1. z = :63/4311/4. Calculate the numerical values of zt for t = 10. (e) Over the past 50 years, Brazil's population growth rate has averaged about 2.3%. According to the rule of 70, Brazils population will double in about how many years