For the geometric sequence 1, b, b, b,..., which of the following is the sum of the first six terms, 567 1+b+b2+3+... 65+*+b+b+b+1 I+a+a+ (at at gatga o 99+9+29+9+T $9+9+29+9+1 For the same geometric sequence 1, 6, 62, 6, ..., which of the following is bs? b?+66+65 +6*+*+b2+b 29+9+9+24+9 ****9+29+9 a+a+9+9+9+990 99+$9+9+29+9