1. In 2009, the world population was 6.8 billion people. The exponential growth rate was 1.13% per year. Find the following: a. Find the exponential growth function b. Estimate the population of the world in 2012 and 2020 c. When will the world population be 8 billion people 2. Solve using the best method (substitution): ln x2 = (ln x)2 3. Given the following function: g(x) = -2x2 - 4x - 7 Find the following: a. Vertex b. Axis of symmetry c. Min or max value 4. Solve this ln problem using best method: ln(x + 8) + ln(x - 1) = 2 ln x 5. Money Problems are important! In this problem, I have $5,000 invested at 3.5% interest, compounded quarterly. Find how much money I have after 3 years. Use the equation from Equation 6.2, Page 470