Give an example of an even function and explain algebraically why it is even.

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?