If 6 + 10 = 14 and 3 + 4 = 2,ℎ what is the value of 5 + 7?

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.