[填空题]
The amount of fuel in a car's tank, V, in litres, can be mo .dkjouq ;y22fr;*r-qv4xskegd 3;h wdelled by a lineajj:;f,klx6+-codnh fc +f5bf r function, V=mx+c, where x is cl b5d ch+;f, 6jx+ok:j -fnffthe distance 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