Given the following Arithmetic Sequence, create a formula for the nth term, then find the 50th term in the sequence.
-1, -0.5, 0, 0.5, ...
Nth term =F + (N -1) x D, F=first term, N=number of terms, D=common difference.
50th term=-1 + (50 -1) x 0.5
=-1 + (49 x0.5)
=-1 + 24.50
=23.50
+16 
