I need help STAT please do your best to help me!

For how answer my question this will be the last question can you answer in math subject

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

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.