Solve for n. 56 = -4n

Use the quadratic formula to solve 5x=6x^2-3,what are the values of x?

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.