Original cost of a shirt: $54 ; markup by 50%, then markdown by 25%

Why do interests rates on loans to be lower in a weak economy than in a strong one

When only separate discreet points are graphed it is called?

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?