What is the recursive rule for the sequence?
−7.4, −21.2, −35, −48.8, −62.6, ...
A.) an=an+1+13.8 , where a1=−7.4
B.) an=an−1+13.8 , where a1=−7.4
C.) an=an−1−13.8 , where a1=−7.4
D.) an=an+1−13.8 , where a1=−7.4
The common difference is -21.2 - (-7.4) = -13.8
So
an = an-1 - 13.8, where a1 = - 7.4
+28 
