What is the nearest ten for the point shown on the number line below?​

Use set buikder notation to represent the following set: {, -2, -1, 0}

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.

Does 9q + 7 also equal 7 + 9q ? (simplifying algebraic expressions)