SOLUTION: I have solved this problem but not sure if my answer is right or wrong want to know from you guys so please help me i have to submit my assignment and tomorrow is the last date PLE

Question 1022735: I have solved this problem but not sure if my answer is right or wrong want to know from you guys so please help me i have to submit my assignment and tomorrow is the last date PLEASE PLEASE NEED HELP 😢
The 8th term of an arithmetic sequence is 25 and the 20th term is -11.Find the first term of the sequence and the commom difference and use these to write the general term .
According to my answer the general term is tn=49.5+(n-1)(-3.5)
Thanks in advance ☺

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
No with your formula the 8th term is 25 but the 20th term is -17.

So then,

and

So then,

You can verify that the 8th and 20th term match what you need.

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