Use the graph for 12-14

12. The independent variable is shown on the
x-axis. What quantity is the independent
variable? 13. The dependent variable is shown on the y-axis. What quantity is the dependent variable?14. How can you find the money collected if you know the number of tickets sold?
There are 4 questions and a graph. Please show work.

In  mathematics, the  pythagorean theorem, also known as  pythagoras' theorem, is a fundamental relation in  euclidean geometryamong the three sides of a  right triangle. it states that the square of the  hypotenuse  (the side opposite the  right angle) is equal to the sum of the squares of the  other two sides. the  theorem  can be written as an  equationrelating the lengths of the sides  a,  b  and  c, often called the "pythagorean equation".

Well how many did she buy at the coin show? you need that information.