A store owner paid $20 for a book. She marked up the price of the book by 15% to determine its selling price. What is the selling price of the book?

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

Which statements regarding the diagram are true? check all that apply.

The table represents a linear function. what is the slope of the function? –6 –4 4 6