What is the arc length of an angle of 2π 3 radians formed on the unit circle?

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

Express -5 2/5 as an improper fraction.

If twice a number is at least three less than four times the number, which of the following are true? let n represent the number.