d the compound interest on \( ₹ 10000 \) at \( 5 \% \) p.a. for \( 2 \frac{1}{2} \) years, the interest payable ye

20 Un commerciante vende un prodotto a euro 325 , ottenendo così un guadagno del \( 30 \% \) sul costo di acquisto. Determina: \( \begin{array}{ll}\text { a. il costo sostenuto per l'acquisto } & \text { euro } 250 \\ \text { b. il guadagno conseguito } & \text { euro } \\ \text { c. il prezzo di vendita da applicare invece per guadagnare il } 30 \% \text { del ricavo } & \text { euro } 312,50\end{array} \)

Shoes - a -go held a back to school sale. Harry bought a pair of tennis shoes originally priced at \( \$ 75 \). He was given a \( 30 \% \) discount by the cashier Calculate the discounted price of the tennis shoes \( 15-22.5=52.50 \) Shoes were discounted from \( \$ 40 \) t\$ 26 Calculate the percentage saving on the original price of the shoes.

pters 9, 10, 11) Question 14 (3 points) - Nicklaus Company has a machine that cost \( \$ 88,000 \). - They decided to sell this machine on June 30,2020 . - The balance in the accumulated depreciation account on December 31,2019 after recording the - The annual depreciation was \( \$ 64,000 \). - The machine was sold for \( \$ 52,000 \). Using the straight line method, what was the amount of the gain or loss recorded at the time of the sale?

Question 15 (1 point) \( \begin{array}{l}\text { Marty the millwright earns } \$ 28.75 \text { per hour. If he receives a } 2.85 \% \text { raise, what is his } \\ \text { new hourly rate? }\end{array} \)

Suppose that \( \$ 10,970 \) is invested at an interest rate of \( 5.5 \% \) per year, compounded continuously. a) Find the exponential function that describes the amount in the account after time \( t \), in years. b) What is the balance after 1 year? 2 years? 5 years? 10 years? c) What is the doubling time? a) The exponential growth function is \( \mathrm{P}(\mathrm{t})=10970 e^{0.055 t} \). (Type exponential notation with positive exponents. Do not simplify. Use integers or decimals for any numbers in the equation.) b) The balance after 1 year is \( \$ 11,590.25 \). (Simplify your answers. Round to two decimal places as needed.) The balance after 2 years is \( \$ \square \). (Simplify your answers. Round to two decimal places as needed.)