What is the Solow Growth Model? 2) What are the main factors of the Solow Growth Model? Calculate the following using the Rule of 70: 3) How many years will Vietnam grow with a GDP of $260 billion dollars at a growth rate of 7%? 4) How many years will India grow with a GDP of $3 trillion dollars at a growth rate of 3%? 5) How many years will the U.S. grow with a GDP of $19 trillion dollars at a growth rate of 1.9%? 6) How many years will Colombia grow with a GDP of $323 billion dollars at a growth rate of 4%? 7) How many years will Ukraine grow with a GDP of $153 billion dollars at a growth rate of 2%? 8) How many years will the Ghana grow with a GDP of $67 billion dollars at a growth rate of 6%?