Which conclusion of the following statement must always be true?

“If angle 1 and angle 2 are alternate interior angles of parallel lines cut by a transversal, then”

angle 1 and angle 2 are supplementary.

angle 1 and angle 2 are complementary.

angle 1 and angle 2 are a linear pair.

angle 1 is congruent to angle 2.

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project

Three students, javier, sam, and corrine, participated in a fundraiser where people donated a certain amount of money per lap that the student ran. each student also had some initial donations that were collected before the run. the equations that represent each student's total donation, y, based on the number of laps ran, x, is shown below. match each equation with the correct rate of change for that student.

What is the slope of the line passing through the points (-5, 7) and (-3,5)?