Well it all depends on where you live, gas prices vary on regions of the country, so we need the details. It depends on how much it cost per gallon.
So simply multiply the amount of dollars per gallon with the size of the tank. Gas cost about $3.28 per gallon and I have an 18 Gallon tank so 3.28 x 18 is $59.04
You can find the size of the tank if you go to msn.com and click on autos and go from there, they will give you every peice of info you need on an Acura RSX even tank capacity