Question

Write a formula for the nth term of the arithmetic sequence

1, -3, -7, - 11, - 15...
The formula for the nth term of the sequence is an

Answer 1

Explanation:

`a_(1)=1\\d=-3-1=-4\\a_(n)=a_(1)+(n-1)d\\a_(n)=1+(n-1)(-4)\\a_(n)=1-4n+4\\a_(n)=5-4n`