How do i do #3? i dont know how to do the whole problem.

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

Hundred and tens tables to make 430 in five different ways

Vertical angles must check all that apply