Monica deposits \( \$ 400 \) into a savings account that pays a simple interest rate of \( 3.9 \% \). Paul deposits \( \$ 500 \) into a savings account that pays a simple interest rate of \( 3.8 \% \). Monica says that she will earn more interest in 1 year because her interest rate is higher. Is she correct? Justify your response.

2 Jane sells jewellery. Her weekly commission is based on a sliding scale of \( 9 \% \) on the first \( \$ 2500 \) of her sales, \( 5 \% \) on the next \( \$ 5000 \) and \( 1 \% \) thereafter. She also gets a weekly retainer of \( \$ 500 \) Jane's weekly commission

2 Jane sells jewellery. Her weekly commission is based on a sliding scale of on the first \( \$ 2500 \) of her sales, \( 5 \% \) on the next \( \$ 5000 \) and \( 1 \% \) thereafter. She also gets a weekly retainer of \( \$ 500 \) Jane's weekly commission

\begin{tabular}{ll|l|}\hline A. UNA SERIE DE PAGOS MESUALES SE INICIA HOY CON UN AHORRO DE \( \$ 50.000 \) EN EL MES 1 DE \( \$ 60.000 \), EN \\ EL MES \( 2 \$ 70.000 \) Y ASI SUCESIVAMENIE HASTA LLEGAR A EL MES 23. PARA UNA TASA DE INTERES DEL \( 32 \% \) \\ \hline\end{tabular}

What is the approximate balance after 20 years? Choose the correct answer below. \( \begin{array}{ll}\text { A. } \$ 200 & \text { B. } \$ 400 \\ \text { C. } \$ 100 & \text { D. } \$ 10 \\ \text { b) About how fast is the balance increasing after } 20 \text { years? } \\ \text { Choose the correct answer below. } \\ \begin{array}{ll}\text { A. } \$ 5 / y e a r & \text { B. } \$ 200 / y e a r \\ \text { C. } \$ 20 / y e a r & \\ \text { c) Use the answers to parts a) and b) to determine the interest rate. }\end{array} \\ \text { The interest rate is } \square \% .\end{array} \)

laptop has a listed price of \( \$ 520.99 \) before tax. If the sales tax rate is \( 6.75 \% \), find the total cost of the laptop with sales tax included. ound your answer to the nearest cent, as necessary. \$ \( \square \)