Question

Find the first six terms of the sequence. (1 point)

a1 = -8, an = 5 • an-1

-8, -40, -200, -1000, -5000, -25,000
-8, -40, -35, -30, -25, -20
0, 5, -40, -35, -30, -25
-40, -200, -1000, -5000, -25,000, -125,000
3. Find an equation for the nth term of the arithmetic sequence. (2 points)

8, 6, 4, 2, ...

an = 8 + -2(n)
an = 8 - 2
an = 8 + -2(n + 1)
an = 8 + -2(n - 1)
4. Find an equation for the nth term of the arithmetic sequence. (2 points)

-20, -16, -12, -8, ...

an = -20 x 4(n - 1)
an = -20 + 4(n - 1)
an = -20 + 4(n + 2)
an = -20 + 4(n + 1)

Answer 1

for the first question each term is formed by multiplying the previous by 5

Answer 2

- except for the first term a1 which is -8

Answer 3

-8, -40, -35, -30, -25, -20 ??

Answer 4

an means the nth term and an-1 means the term before it

Answer 5

no does -40 * 5 = -35?

you MULTIPLY by 5

Answer 6

-8, -40, -200, -1000, -5000, -25,000 ??

Answer 7

right
5 . an-1 means 4 times an-1

Answer 8

* 5 times

Answer 9

thank you !
could you also help me with 3 and 4?

Answer 10

for an arithmetic series
the nth term an:-

an = a1 + (n-1)d
where a1 = first term and d = common difference

Answer 11

the common difference = second term - first term
what is that in question 3?

Answer 12

an = 8 + -2(n - 1) !

Answer 13

yes
a1 = 8 and
d = -2

Answer 14

now do number 4 is same way
a1 = -20
d = -16 - -20 = ?

Answer 15

Note the double negative

Answer 16

-36

Answer 17

no
- - = +

Answer 18

+4

Answer 19

right

Answer 20

so an = -20 + ?

Answer 21

an = -20 + 4(n - 1) ??

Answer 22

right!

Answer 23

thank you so much :)

Answer 24

yw

Answer 25

love you <3

Answer 26

lol - dont tell my wife u said that!