There are n gallons of oil. after m gallons have been used then, in terms of m and n, what percent of oil remains? what percent was used?

percent of oil remains;
percent was used.
also i need this today

Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

20.ju inces. which ordered pair is a viable solution if x represents the number of books he orders and y represents the total weight of the books, in ounces? (-3,-18) (-0.5, -3) (0,0) (0.5, 3)