For the function, y=2cosx+cotx, π≤x≤2pi, find the critical numbers, the intervals of increase and decrease, and any maximum and minimum values. Express the max and min values to two decimal places.

Aiden drives to school and back each day. the school is 16 miles from his home. he averages 40 miles per hour on his way to school. if his trip takes 1 hour, at approximately what speed does aiden drive home?

For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2