HELP ME OUT PLEASE!!!

What is the equation of this line?

Aladder that is 30 ft long needs to reach 27 ft up a building. what should the angle of the vertical be?

Frank is lending $1,000 to sarah for two years. frank and sarah agree that frank should earn a real return of 4 percent per year. instructions: a. the cpi (times 100) is 100 at the time that frank makes the loan. it is expected to be 113 in one year and 127.7 in two years. what nominal rate of interest should frank charge sarah?

Asap! i need this done today and i really don’t understand it. some one ! will mark