PLEASE HELP URGENT I DONT UNDERSTAND THIS AT ALL

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

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?