Answer:
.4=a
Step-by-step explanation:
self explanatory
I’m not sure i’m pretty sure it’s 28
Given:
second term = 18
fifth term = 144
The nth term of a geometric sequence is:

Hence, we have:

Divide the expression for the fifth term by the expression for the second term:

Substituting the value of r into any of the expression:

Hence, the explicit rule for the sequence is: