Question

Am I doing this right so far?
What is the 15th term of the arithmetic sequence 16, 23, 30, ?

First term: 16
Common ratio: 23/16 = 1.4375

Answer 1

why common ratio ?
thats for geometric sequence,
we are dealing with arithmetic sequence here.

Answer 2

so, find common difference d=.... ?

Answer 3

oh my error

Answer 4

oh right!!! ok let me seee

Answer 5

so i find a number that goes into all of the numbers above?

Answer 6

you find a number which when added to current term, gives you next term

Answer 7

what would you add to 16 to get 23
what would you add to 23 to get 30
?

Answer 8

16 + 7?

Answer 9

omg it's 7!!! :))

Answer 10

thats correct, so common difference
d=30-23=23-16 =7
now you know the formula for n'th term of arithmetic sequence ?

Answer 11

yes

Answer 12

so, what you got 15th terms as ?