Question

Which equation represents the nth term of the sequence {2,1,-4,-7...}.

a n =2n-5
a n=3n-1
a n=-3n-10
a n=-3n+5

Answer 1

n=-3n+5

Explanation:

Answer 2

D

Explanation:

I can only answer this if the second term is -1

a = 2

d = -3

t_n = a + (n - 1)*-3

t_n = 2 + -3n + 3

t_n = 5 - 3n or

t_n = - 3n + 5

That's D