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45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?

What is the distance between a and b? round your answer to the nearest tenth. a coordinate plane is shown. point a is located at negative 1, 5, and point b is located at 4, 1. a line segment connects the two points.