What is 0.275 0.2 0.572 0.725 ordered from greatest to least

∆red ≅ ∆ by rule will give brainiest if possible

Michael and imani go out to eat for lunch if their food and beverages cost 25.30 and there is an 8% meals tax how much is the bill

How do you figure out which order to do two step equations in? like which thing do you subtract/add/multiply/divide first? i understand that you do the opposite of whatever's shown on the opposite side, but when?