The set of all points in a plane that are equidistant from two points is a (n):

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.

Can someone me with the property questions for 12 13 and 14 plz

What number line represents the solution set for the inequality -1/2 greater than or equal to 4