Question

solve using the an=a1+(n-1)d formulaa1= -20, d=-4

Answer 1

Answer:

$a_n=-20-4(n-1)$

Explanation:

We have the formula:

$a_n=a_1+(n-1)d$

And we are given:

a_1 = -20

d = -4

Thus:

$a_n=-20+(n-1)(-4)=-20-4(n-1)$