Iknow how to graph piecewise functions but i’m confused on how to find the domain and range for 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

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.