If a 35 year old woman has averaged 8 hours of sleep each 24 hours, how many days of her life has she spent sleeping

What are the sotions to the quadratic equation 9x^2=4

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

I'm confused on this could anyone me and show me what i need to do to solve it.