Poly Pol plans to retire from teaching 7 yrs from now to start a business of his own. He decided to deposit 25k every beginning of the year until he retires. How much is his total money after 7 yrs at 9% compounded annually?

Carrie wants to have a business of her own. She plans to have an annual deposit beginning of the year at the rate of 7%. In 2023, she will deposit 45k; 2024, 55k; 2025, 50k and in 2026 an amount of 85k. How much would be her total capital when she start her business?