Lila plans to invest $12,000 each year for 30 years. If she earns 9.3% per year, how much will she have when she retires?

Brittany plans to invest $12,000 at the beginning of each year for 30 years. If she earns 9.3% per year, how much will she have when she retires?

Vivian plans to invest $12,000 each year for 30 years. If she earns 9.3% per year, how much will she have when she retires if she invests monthly?

Alex plans to invest $12,000 each year for 30 years. If she earns 9.3% per year, how much will she have when he retires if she invests at the beginning of each month?

Amelia wants to have $2,000,000 30 years from now in an investment account. If she earns 9.3% per year and saves money every month, starting one month from now, how much will she have to save each month to reach his goal?