2) O montante (M) de determinado capital em um fundo de investimento, após o tempo (t) em anos, é dado pela fórmula \( M(t)=C \cdot 1,5^{\dagger} \). Nessas condiçōes, o tempo necessário para que um capital de R\$ 800 investido gere um montante de R\$ 4050 é de: a) 3 anos b) 4 anos c) 5 anos d) 6 anos e) 7 anos

4. If a business's revenue is \( \$ 3,421.31 \) and its COGS is \( \$ 921.62 \), what is the profit? A. \( \$ 2,499.69 \) B. \( \$ 4,342.93 \) C. \( \$ 2,299.69 \) D. \( \$ 4,499.69 \)

3. Using a margin rate of \( 35 \% \), what is an item's retail price be if the cost is \( \$ 10 \) ? A. \( \$ 6.50 \) B. \( \$ 12.00 \) C. \( \$ 12.50 \) D. \( \$ 13.50 \)

5. If the cost is \( \$ 17.97 \) and the markup is \( 25 \% \), what is the retail price? A. \( \$ 4.50 \) B. \( \$ 17.72 \) C. \( \$ 13.47 \) D. \( \$ 22.46 \)

A sum of ₹ 1500 is invested for 18 months at an annual interest rate of \( 8 \% \), compounded quarterly. What is the percent gain at the end of 18 months to the nearest one decimal point? \( \begin{array}{ll}\text { A. } 12.6 \% & \text { B. } 13.5 \% \\ \text { C. } 18.2 \% & \text { D. } 10.4 \%\end{array} \)

5 Emil har ett lân pà 60000 kr . Räntesatsen är \( 5 \% \). Hur stor blir räntan på \( \begin{array}{lll}\text { a) } 1 \text { âr } & \text { b) } \frac{1}{2} \text { år } & \text { c) } 3 \text { mån }\end{array} \)