If the term number is n, then the nth term is 10(n-1) +8.
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To find the 8th term of the sequence with the rule 3n + 4, you would substitute n = 8 into the formula. This gives you 3(8) + 4 = 24 + 4 = 28. Therefore, the 8th term of the sequence is 28.
The 'n'th term is [ 13 + 5n ].
The 'n'th term is [ 13 + 5n ].
Halfway between 18 and 28 is (18 + 28) ÷ 2 = 23.
18