Find the time required for an investment of 3,000 dollars to grow to 12,000 dollars at an interest rate of \( 7 \% \) per year, compounded monthly. Give your answer accurate to 2 decimal places. \( \square \) years.

A car salesperson earns \( \$ 900 \) each month plus \( 6 \% \) commission on her monthly car sales. If she sells \( \$ 58,000 \) worth of cars on a given month, which of the following is her total monthly salary? A. \( \$ 4,380.00 \) B. \( \$ 3,534.00 \) C. \( \$ 3,480.00 \) D. \( \$ 3,426.00 \)

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If \( \$ 6000 \) is invested in a bank account at an interest rate of \( 6 \% \) per year, Find the amount in the bank after 6 years if interest is compounded annuall 8511.11 Find the amount in the bank after 6 years if interest is compounded quaterly Find the amount in the bank after 6 years if interest is compounded monthly

Suppose Lisa borrows \( \$ 7500 \) at an interest rate of \( 4 \% \) compounded each year. Assume that no payments are made on the loan. Follow the instructions below. Do not do any rounding. \[ \begin{array}{l}\text { (a) Find the amount owed at the end of } 1 \text { year. } \\ \text { (b) Find the amount owed at the end of } 2 \text { years. }\end{array} \]

Suppose that \( \$ 8500 \) is placed in an account that pays \( 17 \% \) interest compounded each year, Assume that no withdrawals are made from the account, Follow the instructions below, Do not do any rounding. (a) Find the amount in the account at the end of 1 vear. (b) Find the amount in the account at the end of 2 years. \( \$ 11637.15 \)