Write formula for the general term or nth term for the sequence. Then find the indicated term.

2,4,8,16,...;a6

Write formula for the general term or nth term for the sequence. Then find the indicated term.

2,4,8,16,...;a6

an=

(Type expression using n as thevariable.)

a6=

Find the sum of the finite series.

i=1

4

(2i+1)

i=1

4

(2i+1)=

nothing

Rewrite the series using summation notation. Use 1 as the lower limit of summation.

34+45+56++1920

34+45+56++1920=

nothing

Find the general term of the following arithmetic sequence then find the indicated term of the sequence.

9,19,29,39,...; a12

The general term of the given arithmeticsequence, an=

.

(Simplify youranswer.)

The indicated term of thesequence, a12=

nothing

Given an arithmetic sequence with d=6 and a7=4, find a22.

a22=

nothing

Find the indicated sum.

j=1

10

(3j+5)

j=1

10

(3j+5)=

nothing

Find the sum.

10+13+16+...+127

The sum is

nothing

Find the 8th term of the geometric sequence whose first term is 5 and whose common ratio is 4.

a8=

nothing

Given a geometric sequence such that a4=40 and a7=320, find a10.

a10=

nothing

Find the sum of the geometric series.

i=1

3

2(4)i1

What is the sum of the geometricseries?

Sn=

nothing

Determine whether the infinite geometric series converges or diverges. If itconverges, find its sum.

.