Pleaseee help me I need to finish!

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

15 points ! ~ see if you know the answer to both you!

Which of the following points is collinear with (-2,1) and (0,3)