Please solve these 4 Economics questions

There ?re four questions I need hel? with. These four questions are important for me to understand the midterm exam, I’m ver? appreciate if you can provide the correct answer for me.This course is Macroeconomics and Financial Markets and use textbook: Macroeconomics, Fifth Canadian Edition, by Stephen D. Williams.? Q1 relate to chapter 2 focus on GDP movement.? Q2 relate to chapter 5- A Closed-Economy One-Period Macroeconomic Model. ? Q3 i’m not sure which chapter it relates to.? Q5 relate to chapter 7, Please focus on this question step by step in calculation, Malthus and Solow Model.? Only answer question 1,2,3,5—Four questions.
-You can use calculator but do not use Excel to calculate, because I need all questions to solve by hands step by step. There are some formulas you can use to help work for you in calculation.