A video rental store charges a monthly membership fee of $10 plus $4 per video that is rented. The relationship between the number of videos rented and the total charge per month can be expressed with the equation y = 4x + 10, where x is the number of videos rented and y is the total charge per month. Find the domain and range of this relationship.

In this example, the independent, or x, variable is the number of videos rented. The possible x-values include all whole numbers, since only whole number of videos can be rented.

The dependent, or y, variable is the total charge per month. The possible y-values include 10, 14, 18, 22, …

D: {0,1,2,3,...}
R: {10,14,18,22,...}