Arithmetic+Geometric Math HELP!
Hi basil D:
I really need help. My finals are coming up and I just can't get this review question..
The 1st, 5th and 13th terms of an arithmetic sequence are the first three terms of a geomteric sequence with common ratio 2. If the 21st term of the arithmetic sequence is 72, calculate the sum of the first 10 terms of the geometric sequence
Help please D:
Thanks!
June 6, 2011