Activity 3. Directions: Answer the following. 1. Find the sum of the first 8 terms of the geometric sequence if ay = 1 and r = 2. 2. Find the sum of the first twelve terms of the sequences 3, -6, 12, --24, ... 3. Find the sum of the first seven terms of -3,3,3,3,... 4. Given that r = 2, n = 7, and an = 192, find an and Spa Sne 5. Find the sum of the first five terms of a geometric sequence where the last term (an) is 324 and the common ratio is 3.
