1.
Find the sum of the first five terms of the geometric series for which
a
1
= 2 and
r
= 2.
A.
62
B.
30
C.
126
D.
14
Hint
2.
Determine the sum of the geometric series for which
a
1
= -486,
, and
a
n
= -6.
A.
732
B.
-726
C.
322.6
D.
325
Hint
3.
Find the sum of the geometric series –5, -10, -20, -40, . . . for 7 terms.
A.
-599
B.
-689
C.
-635
D.
-527
Hint
4.
Identify
a
1
in a geometric series for which
S
8
= 42.5 and
r
= -0.5.
A.
1.5
B.
C.
64
D.
63.75
Hint
5.
Find
a
1
in a geometric series for which S
12
= 3071.25 and
r
= 2.
A.
B.
3
C.
D.
Hint