Three out of four of workers drive to work alone. If seven workers are chosen, find the probability that three drive to work alone.

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

Find the volume of the wedge cut from the first octant by the cylinder z=12-3y^2 and the plane x+y=2.

In triangle abc, angle c is a right angle. find the value of the trig function indicated. find tan a if c = 17 and a = 8