4. If I invest $1,000 at the beginning of each year every year for the next seven years in an account paying 4% annual interest, how much will I receive at the end of 7 years? 5. . I want to borrow $35,000 for 5 years to buy a new car. If the APR is 5%, calculate my monthly payment. 6. In how many years will my savings triple if I can earn 4% annual interest