For each sequence, find the first 4 terms and the 10th term.

Step-by-step explanation:

a) 12 - n

1st term = 12 - 1 = 11

2nd term = 12 - 2 = 10

3rd term = 12- 3 = 9

4th term = 12 - 4 = 8

10th term = 12 - 10 = 2

b) 5 - 2n

1st term = 5 - 2*1 = 5 - 2   = 3

2nd term = 5 - 2*2 = 5 - 4 = 1

3rd term = 5 - 2*3 = 5 - 6 = -1

4th term = 5 - 2*4 = 5 - 8 = - 3

10th term = 5 - 2*10 = 5 - 20 = -15

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