Answers

2016-06-26T18:11:41+08:00
1.general rule: an=5n
a1=5(1)=5
a2=5(2)=10
a3=5(3)=15
2. ther common difference is x5 ;6(5)=30(5)=150
3.general rule:an=4n+6
a1=4(1)+6=10
a2=4(2)+6=14
4.general rule:an=7n-5
a1=7(1)-5=2
a2=7(2)-5=9
0