Question

Rachel has 500 collector cards, and she is selling them to save up for a new car. However, she can only sell 15 cards per week. Write an expression to represent the total number of cards left in her collection.

a) 500 - 15x
b) 15x - 500
c) 500 + 15x
d) 15x + 500

Answer 1

The expression to represent the total number of cards left in Rachel's collection is 500 - 15x.

Step-by-step explanation:

The expression to represent the total number of cards left in Rachel's collection is 500 - 15x (option a). This expression represents the initial number of collector cards Rachel has (500) minus the number of cards she sells each week (15) multiplied by the number of weeks (x).

For example, if Rachel is selling cards for 2 weeks, the expression would be 500 - 15 * 2 = 470. This means that she would have 470 cards left in her collection.

It is important to note that option b (15x - 500), option c (500 + 15x), and option d (15x + 500) do not accurately represent the scenario described in the question.