I'd like to get an example in words and explanation why it is a linear/non linear problem.
I want the example to be something like
"You have to paint a full house when every room consumes x amount of paint and you can only buy paint in
3 gallons for $15
7 for $30
20 for $85
how many of each of the options should i buy in order we should have enough to paint the full house and it should cost the least.