Five people each start the day with x candies. During the day, each of them eat two of their candies. What is the total number of candies that have not been eaten at the end of the day?

In Algebra, an expression is one or a number of mathematical symbols that represent a number or quantity.  Expressions can contain any number of numbers, letters and symbols. This quiz also has questions on interpreting expressions; which means applying algebra to real-life situations.