What are different ways that equal 928,904

Which of the following can be used to explain a statement in a geometric proof?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

Which number line correctly shows 0.8 + 0.3?