The answer is c
I love math btw
Answer:
414.857143
Step-by-step explanation:
r=66
=2*66*22/7
=414.857143
The difference means subtract
5y means product or 5 times y
5y - 15
Answer:
-25
Step-by-step explanation:
sorry for the mistake
a.
In order to find the common ratio, we just need to divide a term by the term that comes before it.
So using the terms 20 and -5, we have:

b.
The recursive rule can be found with the formula:

Where an is the nth term and q is the ratio. So we have:

c.
The explicit rule can be written as:

Where an is the nth term, a1 is the first term and q is the ratio. So: