Compute the PI ratio of the following project with the WACC of 9%: `0 1 2 3 4 $ (1,800.00) $ 200.00 $ 100.00 $ 300.00 $ 900.00

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.