$4/5$ Questions:

$1-$a: What is the relevant cost of theolite for the purpose of analyzing the special$-$order decision?

$1-$b: The relevant cost of theolite for the purpose of analyzing the special$-$order decision is an example of what?

$2$: Identify the relevance of each of the numbers given in the exercise in making the decision $($sales value, book value, and current purchase cost$)$