What information do you need to know in order to find the surface area of a rectangular prism

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

What is the absolute value of -100000000000000?

How do i take any fraction and make it into a decimal or percentage?