Write thThe bookstore is selling a series of 4 books for $97.50. What is the unit price for one book? Round your answer to the nearest cent if necessary. e ratio as a fraction: 630kilometers in 5hours. Simplify your answer.

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

We just started the introduction into circles and i have no idea how to do this.

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x