SOLUTION: 15. Please help me with this problem https://answers.yahoo.com/question/index?qid=20210419170117AAIuLG2

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Question 1179191: 15. Please help me with this problem
https://answers.yahoo.com/question/index?qid=20210419170117AAIuLG2
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

Write a formula for the sequence below, then find a%5B10%5D
-4,-12,-36,-108.......
-12%2F-4=3
-36%2F-12=3=> common ratio is 3

nth term formula
a%5Bn%5D=-4%2A3%5E%28n-1%29
find a%5B10%5D
a%5B10%5D=-4%2A3%5E%2810-1%29
a%5B10%5D=-4%2A3%5E9
a%5B10%5D=-78732