What is the area of the equilateral triangle with the side length of 2 units?

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Standard deviation of 19,29,21,22,23

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?