What is the equation used to find the nth term of the arithmetic sequence: - 9, - 4 1, 6, 11 ...

a^n = -9-5n

a^n = 5-9 (n-1)

a^n = -9 + (n-1) ⋅5

a^n=-9 (5) ^ (n-1)

a^n=-9 + (n-1).5

Step-by-step explanation:

Arithmetic sequence=a + (n-1) d

a=-9

n=?

d=+5

Arithmetic sequence=-9 + (n-1) 5

=-9+5n-5

Collect like terms

-9-5+5n

-14+5n

So the final answer is

an=-9 + (n-1).5