What is the common ratio for the geometric sequence below, written as a function? 768,480,300,187.5

Every geometric sequence has a common ratio which is a constant and is the quotient of any term divided by the term preceding it.  In this case:

r=480/768=300/480=187.5/300=0.625

So the common ratio is 0.625 or if you prefer 5/8

I’m vary good with science if you need with that

That’d be 9 years or something