Please help I’m stuck
Also please give the right answers and explain how you got them

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

Me asap! what is the slope of this line? enter your answer in the box.

How do you solving the solution of each system using elimination?