Question

find the common difference of the arithmetic sequence. 6, 9.4, 12.8, 16.2, . . . a. –1.6 b. 15.4 c. 1.6 d. 3.4

Answer 1

Common difference is just the number you pick minus the previous number,
You have 6, 9.4, 12.8, 16.2, . . .

d=9.4-6=3.4
d=12.8-9.4=3.4

The common difference is 3.4