1. What is the sum of the first 8 terms of the geometric series? 160 320 120-80+ + ... 3 9 Express your answer as a simplified fraction. Answer: (Score for Question 2: of 5 points) 2. Consider the infinite series defined by 2n! M 8 2n (a) What is the value of r from the ratio test? (b) What does this r value tell you about the series? Answer: (Score for Question 3: of 4 points) 3. Harold uses the binomial theorem to expand the binomial ( 3x5 - dy3 ) (a) What is the sum in summation notation that he uses to express the expansion? (b) Write the simplified terms of the expansion