I need some help with this question for geometry. okay you have to also show how you got the answer. my teacher gave the answer already but she wants us to figure out how we got the answer.​

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

Which graph represents the parent function of y=(x+2)(x-2)

In the diagram, gef and hef are congruent. what is the value of x