Will give brainliest! please answer asap! question in pic!

an = a(r)^(n-1)

a is the 1st term

r is the common ratio

So, we have:

an=1(-4)^n-1

In the first box, put a "1", and the in the second box put a -4.

Let me know if this helps!

Step-by-step explanation:

The first term is -4 and the common ratio is;

The equation for this sequence is:

Step-by-step explanation:

-3+4=1

or

negative 3 - negative 4