Answer:
$ 5121.8
Explanation:
The advertise shows 51 training sessions for $ 1964.
According to the unitary method,
The cost of 51 training sessions = $ 1964
Cost of one training session =

Thus, the cost of 133 training sessions = cost of one training session x 133
= $ 38.51 x 133 = $ 5121.8
Thus, the cost of 133 training sessions is $ 5121.8.