Here is the equation of a circle: x2 + y2 + 12x + 2y + 12 = 0 Find the center and radius of the circle.

What does the sign of the slope tell you about a line?

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?

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?