I need immediate help (A lot of points)
• trolls will be reported it’s multiple-choice answer it’s algebra pretty easy but I guess I’m too lazy to do it

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Determine if the equation defines y as a function of x: 2xy = 1. yes o no

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?