When calculating the length of an arc, does it matter which unit of measurement (radians or degrees) you use when measuring the central angle?

In the final round of trivia competition, contestants were asked to name as many states that begin with the letter m as they could in 15 seconds. the bar graph shows the number of states the contestants were able to name. how many contestants participated in the final round of the competition?

Which is an equation for the nth terms of the sequence 12,15,18,21

1foot = 12 inches; 1 yard = 3 feet