1) The document contains 10 math problems from a Brazilian entrance exam (Fuvest). The problems cover topics like functions, geometry, probability, and word problems.
2) Mafalda is frustrated that she cannot solve one of the math problems. The problem asks her to solve 291.
3) A transportation company received a request to make an additional delivery, which would require deviating from the most direct route. The question calculates the minimum price the company would need to charge for the extra time and fuel required.