Find the general term of the set. {8, 12, 16, 20, 24, . . .}
It's :
4n+4
1st term, n=1, 4 * 1 + 4 = 4 + 4 = 8
2nd term, n=2, 4 * 2 + 4 = 8 + 4 = 12
3rd term, n=3, 4 * 3 + 4 = 12 + 4 = 16
4rd term, n=4, 4 * 4 + 4 = 16 + 4 = 20
5rd term, n=5, 4 * 5 + 4 = 20 + 4 = 24
6rd term, n=6, 4 * 6 + 4 = 24 + 4 = 28
7rd term, n=7, 4 * 7 + 4 = 28 + 4 = 32
etc