Write an expression that represents the height of a tree that begins at 7 feet and increases by 2 feet per year. Let t represent the number of years.
(Type integers or decimals.)
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Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

What is the graph of the function fx x+2/x-3?

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.