How do we find the volume of a regular solid? Please answer.

Restrictions on f(x) = 1/x+5 and g(x) = x-2

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?