The set of independent variables of a function is the .

Answer the questions in the attachment. a rescue helicopter is at point a and a rescue boat is at point e. the helicopter pilot spots boats in distress at points d and c,with angles as marked in the diagram. figure abce is a rectangle. the altitude of the rescue helicopter, represented by ae, is 5000 feet.

Which graph represents the following piecewise defined function?

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?