Please urgent solve it accurately and completely.

9. You are depositing $3,000 today in an account with an expected rate of return of 10%. If you deposit an additional $4,000 three years from today, and $4,200 four years from today, what will your account balance be ten years from today? Show your formula/calculation/explanation! 10- Ali is willing to pay $210 a month for 5 years for a car payment. If the interest rate is 5%, compounded monthly, and she has a cash down payment of $3,500, what price car can he afford to purchase? Show your calculation mathematically