Question

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

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

Answer 1

find a and b then calculate Tn

Answer 2

@msumner the equation would be an = -17 + 5(n + 2) ?

Answer 3

@rayanlovessarah how do I do that?

Answer 4

@msumner thats not an answer choice

Answer 5

an = -17 + 5(n + 2)

an = -17 + 5(n + 1)

an = -17 + 5(n - 1)

an = -17 x 5(n - 1)
these are the choices

Answer 6

sorry
-17 + d = -12
-17 + 12 = -d
-5 = -d
5 = d

\[a_n=a_1+(n-1)d\]
where a1 is the first term of the sequence, d is the common difference, n is the number of the term to find.
\[a_n=-17+(n-1)5\]
which is the same as
\[a_n = -17 + 5(n - 1)\]

Answer 7

write down the formula to find any term of an arithmetic sequence

Answer 8

@msumner thanks