Question

What is the common difference for the arithmetic sequence?

3.2, 5, 6.8, 8.6, 10.4, ...

Answer 1

common difference, d = T2-T1
which is T1= 3.2 and T2= 5
so substitute :

d= 5-3.2
d= 1.8

Answer 2

d=5-3.2
d=1.8

Good luck with your work!!