Who wants to be my friend?

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.

Find the distance between (7,-6) and (-3,-9)

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?