Question

Find an equation for the nth term of the arithmetic sequence.
a19 = -92, a20 = 6

Answer 1

common difference = 6 - (-92)
nth term = a + (n-1)d

now u need to find to find a

can u do this?

Answer 2

is a -1856?

Answer 3

right

Answer 4

so now you've git it

plug in a = -1856 and d = 98 into the general formula

Answer 5

so the formula would be -1856 + 98(n - 1)

Answer 6

or n+1

Answer 7

?

Answer 8

its n - 1

Answer 9

is it always -1?

Answer 10

yes

Answer 11

check out the a20 term

-1856 +(20-1)98 should equal 6

Answer 12

okay thanks. can you help me with a few more?

Answer 13

no sorry i gotta go right now

Answer 14

okay thanks anyway