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4 Berechne, welches Anfangskapital angelegt wurde. \( \begin{array}{lll}\text { a) Zinssatz: } 1,2 \% & \text { b) Zinssatz: } 1,1 \% & \text { c) Zinssatz: } 0,9 \% \\ \text { Laufzeit: } 3 \text { Jahre } & \text { Laufzeit: } 8 \text { Jahre } & \text { Laufzeit: } 5 \text { Jahre } \\ \mathrm{K}_{3}: 518,22 € & \mathrm{~K}_{8}: 2182,93 € & \text { K }_{5}: 8889,45 €\end{array} \)

Suppose that a new job has a starting salary of \( \$ 53000 \) and a \( 2.1 \% \) raise per year. What will be the annual salary after 6 years? Round your answer to two decimal places. Question Help: Written Example Submit Question

\( B=\frac{D\left(\left(1+\frac{r}{n}\right)^{n \cdot t}-1\right)}{\frac{r}{n}} \) Here are the values you identified for each variable: \( D=150 \) \( r=0.08 \) \( n=12 \) \( t=10 \)

You're buying a car that is listed at \( \$ 15,499 \). What is the total cost of the car including the \( 7.75 \% \) sales tax? Round to two decimal places.

18. Suppose that \( \$ 84,000 \) is invested at \( 5.5 \% \) interest, compounded quarterly. Find the function that models the investment growth after \( t \) years. Find the amount of money in the account when \( t=10 \) years.