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Jack ha un'automobile con un serbatoio di 50 litri e un carburante il cui consumo medio è 10 Km/l.

Quanti km può fare prima che si accenda la spia (si accende quando mancano 5 litri) ?

 <1> 

  Se Jack deve fare 200 Km. Quanto carburante rimarrà nel serbatoio ?

 <2> litri

  Se invece Jack ha un'automobile con un serbatoio di $serb litri e un carburante il cui consumo medio è $cons Km/l, quanti Km può fare prima che finisca il carburante ?

 <3> Km

  

 

E se vuol fare $kilo kilometri quanti litri usa ?(Approssima all'intero per eccesso)

 <4> litri

La funzione $f rappresenta il livello di carburante nel serbatoio al variare dei Km percorsi x.

 <5> 

  

 

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