Need help with these Maths questions

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farhan_mehmood1
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whats the answer to this question? need help. theres 3 parts.
im struggling to work out as well

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b3th4ny_xxx
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1) To calculate r you need to work out the 2nd term divided by the 1st term (or any term divided by the previous one)

2) Use the formula Un = ar^(n-1) where a is the first term and r is the common ratio/difference between each term

3) plug the number 6 in place of n into the nth term of the sequence

Hope this helps xx
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