3y (y is the unknown number but it represents one number only... and also 3y represents 3 multiply by y)
There is exactly 8333.3333 feet in one million inches
Answer:
Step-by-step explanation:
Hello, this is a geometric sequence so we are looking for a multiplicative factor.

So, the explicit formula is for n

Hope this helps.
Do not hesitate if you need further explanation.
Thank you