En una pequeña isla hay dos taxiw disponibles para la población, pero sus tarifas no son las mismas. El taxista A cobra 1'5€ fijos por viaje y 0'35€ por casa kilómetro recorrifo. El taxista B cobra 2'50€ fijos por viaje y 0'25 kilómetro recorrifo.

A) Para cada uno de los taxistas obtén la expresión analítica de la función que relaciona el coste de un viaje en función de los kilometros recorridos.

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?