Guys I need some help with algebra 2 ASAP I also don’t know how to use this app lol

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Bo is buying a board game that usually costs bb dollars. the game is on sale, and the price has been reduced by 18\%18%. what could you find the answer?