Abarn casts a shadow that is 12 meters long while a tree in the yard casts a shadow that is 8 meters long. how long is the tree if the barn is 20 meters long?

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Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

The variable in a relation who’s value depends on the value of the independent variable is called what?