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 Number sequences Evaluate variable expressions for number sequences Find the first four terms of the sequence 4n-3, where n represents the position of a term in the sequence. Start with n=1. To find the 1st term, plug in n=1. 4n-3=4(1)-3=4-3=1 To find the 2nd term, plug in n=2. 4n-3=4(2)-3=8-3=5 To find the 3rd term, plug in n=3. 4n-3=4(3)-3=12-3=9 To find the 4th term, plug in n=4. 4n-3=4(4)-3=16-3=13 The first four terms of the sequence are 1, 5, 9, 13. Find the first four terms of the sequence 2n, where n represents the position of a term in the sequence. Start with n=1. To find the 1st term, plug in n=1. 2n=21=2 To find the 2nd term, plug in n=2. 2n=22=4 To find the 3rd term, plug in n=3. 2n=23=8 To find the 4th term, plug in n=4. 2n=24=16 The first four terms of the sequence are 2, 4, 8, 16.