Question

Graph the six terms of a finite series where a1 = −3 and r = 1.5.

Answer 1

http://assets.openstudy.com/updates/attachments/535c28dee4b09663a63dcaa3-gabylovesu-1398548726373-screenshot20140426at5.27.46pm.png

http://assets.openstudy.com/updates/attachments/535c28dee4b09663a63dcaa3-gabylovesu-1398548726013-screenshot20140426at5.27.53pm.png

Answer 2

@mathstudent55

Answer 3

sum of n terms = a1 (r^n - 1)
------
r - 1

Answer 4

Yes :)

Answer 5

-3.5(1.5-1)/1.5-1 ?

Answer 6

-3 * (1.5^6 - 1)
----------
1.5 - 1

Answer 7

I got 62.34???

Answer 8

oh thats the sum of 6 terms
sorry I misread the question

Answer 9

It's fine :)

Answer 10

its -62.34

Answer 11

the terms in sequence are
-3 , -3*1.5 , -3*1.5^2 , -3*1.5^3 ...
= -3 , -4.5 , -6.75 , - 10.125 ....

Answer 12

I see, so then I would just look for a graph that showed that?

Answer 13

yes

Answer 14

C?

Answer 15

i have a feeling I'm wrong haha! So I'm going to go with D

Answer 16

D is correct

Answer 17

first 3 points are (1,-3), (2, -7.5) , (3, -14.25

Answer 18

the y values are accumulated

Answer 19

- so , for example, the second y value is -3 - 4.5 = -7.5

Answer 20

Ohh! I understand now:) Thanks so much for your help!

Answer 21

yw