The common ratio of both the formulas is 3 and 2. The first formula is explicit and the second is the recursive formula.
<h3>What is the recursive rule?</h3>
A rule is defined such that its definition includes itself.
1.
The given sequence is
-2, -6, -18, -54
Common ratio ;
r = -6 / -2 = 3

This given formula is the explicit formula.
2.
The given sequence is
4, 8, 16, 32
Common ratio ;
r = 8 / 4 = 2

This given formula is the recursive formula.
Learn more about the recursive rule and explicit rules here:
brainly.com/question/12620593
#SPJ1
Answer:
65
Step-by-step explanation:
6+5=11
Answer:
a
Step-by-step explanation:
Answer:
12.5
Step-by-step explanation:
150 / 12 = 12.5
(I'm not the best at explaining-)