How do i work that work the problem m i gave give

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

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.

Which of the following is an irrational number