Can someone check my answers pleases?

1. Gerald is planning on investing $100 every month from her paycheck into her savings account for the next 15 years. Gerald wants to know how much she will have at the end of 15 years. What is this an example of? future value of a single sum present value of a single sum future value of an annuity present value of an annuity 2. Evelyn hasjust invested 2000 into her savings account a want to know how much it will be worth in five years what is this an example of? future value of a single sum present value of a single sum future value of an annuity present value of an annuity 3. llake hasjust hit the megabucks machine and is to receive 1,000,000 every year for the next 10 years. Jake wants to know how much the ten 1,000,000 payments are worth today. What is this an example of future value of a single sum present value of a single sum future value of an annuity present value of an annuity