Question

tell whether each sequence is arithmetic to justify your answer. if the sequence is arithmetic write a function rule to represent it:

A) 5,10,15,20,...

B) 200,100,50,25,12.5,...

C)-8.1,-5.8,-3.5,-1.2,...
R_scott
A) common difference is 5

B) geometric ... common ratio is 1/2

C) common difference is 2.3