How do you represent an unknown quantity?

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?

What is the prime factorization of 230

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?