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The nth term is -4n+102.

Method:

To find the nth term (Tn) of the sequence, multiply n by the pattern of change in the sequence from left to right (-4). Then, substitute n for a term, for example, term 2. Follow the first step (-4n) which will give -8. Then you add or subtract to equal the number of that term (94). -8+x=94. x=102. Therefore, the formula for the nth term is -4n+102. To prove it, try with any term.

Term 3 (the number is 90).

3 x -4 = -12

-12 + 102 = 90

Tada!

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12y ago

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