Melissa's coffee shop makes a blend that is a mixture of two types of coffee. type a coffee costs melissa $ 5.95 per pound, and type b coffee costs $ 4.15 per pound. this month's blend used three times as many pounds of type b coffee as type a, for a total cost of $ 644.00 . how many pounds of type a coffee were used?

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?