Domain and Range of Discrete and Continuous Graphs

Domain: 0≤x≤25 Range: 0≤y≤500

A hot air balloon is 500 ft above the ground. It is descending at a rate of 20 ft per minute.

Domain: {0,1,2,3,...} Range: {0,18,36,54,...}

Gina is making cookies for the school bake sale. Each batch she makes contains 18 cookies.

Domain: 0≤x≤3 Range: 0≤y≤210

Thomas is driving from Austin to Dallas, a total of 210 miles. He will travel at a rate of 70 miles per hour.

Domain: {0,1,2,3,4,..} Range {0,0.75, 1.5, 2.25, 3,..}

iTunes is having a sale. Each song downloaded is $0.75