what is the most appropriate unit to describe the rate of the cost of gasoline?

Question

anonymous · Answer

Dollars per gallon, because the dependent quantity is the gallons

 Dollars per gallon, because the dependent quantity is the dollars

 Gallons per dollar, because the dependent quantity is the gallons

Gallons per dollar, because the dependent quantity is the dollars

anonymous · Answer

Look :
Why you say km/h ?
Because if you have time can have km .
Now can you answer ?

anonymous · Answer

So I think A is true !

unklerhaukus · Answer

When someone is buying gasoline, the amount they are getting is usually not going to change depending in the price, if they need gasoline for a specific job it will take a specific volume of gasoline.

However, the price, or rate of cost, will vary depending on the market value.

anonymous · Answer

okay thank you