Question

Find the sum of the first 8 terms of the sequence. Show all work for full credit.

1, -3, -7, -11, ...

Answer 1

well, so how do we get from 1 to -3?

Answer 2

-4

Answer 3

we subtract 4 correct? And we also subtract 4 when we get -3 to -7, so we keep subtracting 4 and that is how you will get the next numbers in the sequence

Answer 4

so -11 minus 4 and that minus 4 and then that minus 4 and u just keep subtracting 4 :)

Answer 5

welcome to open study by the way :) You can give medals by clicking best response!

Answer 6

Thanks

Answer 7

no problem :)

Answer 8

You can also use this formula
Sn = n/2(2a+(n-1)d)
were, n=8
a=1
d=-4

Answer 9

thanks