[填空题]
The amount of fuel in a car's td* )p d opie/,+y7nahgsm zr(4mrbf8;21 7s/xsqqaq ox e+ x,dank, V, in litres, can be modelled by a linear function, V=mx+c, where x is the dism s +s;m/7 xb2, zdoqx8ersq 1xqf4a(rtance driven measured in kilometres.
After driving 100 km, the amount of fuel in the tank is 33 litres.
1.Write down an equation that describes this information.
After driving 250 km, the amount of fuel in the tank is 22.5 litres.
2.Write down an equation that describes this second piece of information.
3.Calculate the amount of fuel in the tank after driving 50 km. V = litres