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Asked by Abbie

The nth term of a sequence is 25-3n. work out the first three terms?

Hi Abbie, To calculate the first term eg n=1, let's plug it into the equation 25- (3 x 1) 25-3 =22 So first term is 22 For second term, let's set n=2 25- (3x2) 25-6 =19 So second term is 19 For third term, n=3 25- (3x3) 25-9 =16 So third term is 16 In brief, 1st term is 22, 2nd term is 19 And 3rd term is 16 Hope this is helpful.

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Emma Berwick
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