Question

Find an equation for the nth term of the arithmetic sequence.

-17, -12, -7, -2, ...

an = -17 + 5(n + 2)
an = -17 + 5(n + 1)
an = -17 + 5(n - 1)
an = -17 x 5(n - 1)

Answer 1

\[a_n=a_1+d(n-1)\]
a_1 = first term
d = common difference (2nd # - 1st #)

Answer 2

what's your a_1 and d?

Answer 3

a1 would be -17 and d would be 5

Answer 4

would it be -17 + 5n-5?

Answer 5

or do i not distribute the 5, nvm i got it, Thank you!

Answer 6

-17+5(n-1)

Answer 7

right, don't distribute

Answer 8

can i ask you one more tho? @peachpi on another post tho

Answer 9

ok