Answer:
d
Step-by-step explanation:
If you're looking for unit measures, ft/min., m/s, km/hr, knots, and mph are examples of unit of anemometers.
1 ticket costs $27, 2 tickets cost $54, 3 cost $81, 4 cost $108, and 5 cost $135.
There is a $27 difference between each ticket above or below