_____ and _____ are the two most important financial intermediaries

The table above shows the total product schedule for Rick's Lawn Service, a yard care company. The average product of labor ________ when the 7th worker is hired

A) reaches its maximum B) equals 1 lawn mowed C) equals 28 lawns mowed D) equals 4 lawns mowed E) equals 2 lawns mowed

Darius lent Alejandro $1,000 for one year with the understanding that Alejandro would repay $1,070 . If the actual inflation rate was 7 percent, what was the real rate of interest Darius received?

a. 14 percent b. 7 percent c. 4 percent d. 0 percent e. -7 percent