SOLUTION: 14. Please help me with this problem https://answers.yahoo.com/question/index?qid=20210419170021AAOlhyn

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Question 1179192: 14. Please help me with this problem
https://answers.yahoo.com/question/index?qid=20210419170021AAOlhyn
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

76.8, 96, 120, 150
obviously there is no common difference, so it's not arithmetic sequence
=> check if the sequence is geometric
96%2F76.8=5%2F4
120%2F96=5%2F4=> r=5%2F4

since a%5B1%5D=76.8 and r=5%2F4, nth term formula
a%5Bn%5D=76.8%2A%285%2F4%29%5E%28n-1%29