PLEASE HELP!!!!!!!!!!!!!!
1)Find the common difference for the given sequence.
1.05, 1.1, 1.15, 1.2, ...
A 0.005
B 0.05
C 0.5
2)Which of the following is an arithmetic sequence?
A 0, 2, 4, 6, ...
B 1, 2, 4, 8, ...
C 1, 4, 8, 13, ...
3)Find the common difference for the sequence shown.
56, 49, 42, 35, ...
A -12
B -7
C 7