Find the general term of the following sequences:
a) 7, 13, 19, 25, 31, ...
b) 4, –6, 9, -27/2, ...
a)\( 7, 13, 19, 25, 31, \ldots\)\(a_n=6n+1\)
b) \(4, –6, 9, -\frac{27}{2}, \ldots\)\(a_n=4*(-\frac{3}{2})^{n-1} \\ a_n=a_{n-1}*(-\frac{3}{2})\)
+180 
