Write the repeating decimal number as a mixed number? 2.1111
please get this correct its for finals :)

What percent of the circle below is shaded?

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.

What is the y-intercept of the line with the equation 3x + 4y = 12?