Question

find the first four terms of the arithmetic sequence when a1=3 and d=2
a. 2,5,8,11
b. 3,5,7,9
c. 1,3,5,7
d. 3,6,12,24

Answer 1

Are you on Flvs?

Answer 2

^most likely

Answer 3

an=a1+(n-1)d

Answer 4

but what if i dont know the variable for n?...based on the information i have i can only fill in an=3+(n-1)2

Answer 5

will let me work out on a paper

Answer 6

ok

Answer 7

n is which term u want to find out...in this case u will work out the formula four times using each of the following
n=1
n=2
n=3
n=4

Answer 8

the answer is b, would you like me to explain why?

Answer 9

correct yummy dum

Answer 10

substitute those

Answer 11

so do i substitute those numbers for all problems that i have like this?

Answer 12

pretty much :)

Answer 13

yes correct

Answer 14

:D

Answer 15

n= the term ur looking for
ex: find the 80th term ...then n=80
find the 23rd term... then n=23

Answer 16

do you get it :)

Answer 17

It's pretty easy to do, but very hard to remember the formulas

Answer 18

would u like us to explain?

Answer 19

ya i get it! thanks for all of the help... both of you!

Answer 20

:)

Answer 21

np anytime :D

Answer 22

yup :D