The recursive definition for the geometric sequence is given as follows:

<h3>What is a geometric sequence?</h3>
A geometric sequence is a sequence in which the result of the division of consecutive terms is always the same, called common ratio q.
The nth term of a geometric sequence is given by:

In which
is the first term.
The recursive definition of a geometric sequence is given by:

In this problem, we have that the first term and the common ratio are given, respectively, by:
.
Hence the recursive definition is given by:

More can be learned about geometric sequences at brainly.com/question/11847927
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Answer: a
Step-by-step explanation:
Answer:

Step-by-step explanation:
The vertex form of an equation of a parabola:

- vertex
We have
vertex 

Therefore we have:

Substitute
and 

Finally:

Answer:
25 miles per gallon
Step-by-step explanation:
100 miles divided by 4 gallons
100/4 = 25 miles per gallon