Markov Chains question: Can someone explain how to solve this?

If it rains today, then there's a 10% chance of rain tomorrow. If it doesn't rain today, then there's a 55% chance of rain tomorrow. Today is nice and sunny. What is the chance of rain 3 days from today?

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.