Question

Find an equation for the nth term of the arithmetic sequence. a16 = 21, a17 = -1

Answer 1

an = 351 - 22(n + 1)

Answer 2

@ganeshie8

Answer 3

c.d=a17-a16=-1-21=-22
a16=a+(16-1)d
21=a+15*-22
21=a-330
a=21+330=351
tn=a+(n-1)d
=351+(n-1)*-22

Answer 4

so this ?351 - 22(n - 1)

Answer 5

correct.

Answer 6

thanks a lot!

Answer 7

yw