Are the two triangles below similar?

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.

Determine domain and range, largest open interval, and intervals which function is continuous.

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !