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:
First we would need to find the portion of the gymnasium to the blueprint to do that please do this:
88/5.5 = 16
The length divided by the blueprint's length
Since we know that the gymnasium is 16 times the blueprint, to find the width divide 16 to 76:
76/16 = 4.75
The width divided by the 16 times
The width of the blueprint is 4.75 inches
Answer:
Infinitely Many Solutions
Step-by-step explanation:
