30 POINTS A person is on the outer edge of a carousel that is rotating counterclockwise. Using the unit circle to model the carousel, what is the exact position of the rider after the carousel rotates π/12 radians?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

How are algebraic expressions evaluated using substitution?