The diameters of four congruent semi-circles lie on the sides of a square with sides of length 2 inches. Each semi-circle is tangent to two others,
as shown. Find the total area of the four semi-circular regions.

1. during first 10 seconds 2. between 10 seconds and 35 seconds 3. during 35 seconds to 40 seconds

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?