Ok can someone explain to me how to even do this ? Please do not respond with a link thank you

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

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.

Which graph represents the linear function below? y-4= (4/3)(x-2)