The arithmetic sequence is 0.5, 1, 1.5, 2,........

The first term .

Find the common difference by subtracting successive terms.

The common difference (d) is 0.5.

Find the nth term, so using the nth term formula: .

                   (Substitute , and d = 0.5)

Distibute terms using distributive property: a(b – c)= ab – ac.

Apply commutative property of addition: a + b = b + a.

                                      (Apply additive inverse property: )

Find the 50th term in the sequence.

                               (Substitute n = 50)

                                              (Multiply: )

The 50th term of the arithmetic sequence .