Valerie needs $21,000 6 years from now in order to pay off a loan. How much must she save each quarter for the next 6 years if interest rates are 7 % compounded quarterly? How much of the $21,000 will...

Valerie needs $21,000 6 years from now in order to pay off a loan. How much must she save each quarter for the next 6 years if interest rates are 7 % compounded quarterly? How much of the $21,000 will be interest?

Accounting profit equals to

A. explicit costs minus implicit costs

B. economic profit minus implicit costs

C. economic profit minus explicit costs and implicit costs

D. economic profit minus explicit costs

E. economic profit plus implicit costs