a. Find the simple interest on \( \$ 800 \) for 3 years at \( 51 / 2 \% \).

Liam puts \( \$ 40 \) in savings in March and \( 175 \% \) of this amount in savings in April. How much does Liam put in savings in April?

\begin{tabular}{|l|}\hline \multicolumn{1}{|c|}{ Function Evaluation } \\ \hline \hline \( \begin{array}{l}\text { Given the function } f(x)=24(0.71)^{x}, \text { evaluate each of the following. } \\ \text { Round answers to the nearest hundredth as needed. }\end{array} \) \\ \( f(-3)=\square \) \\ \( f(-2)=\square \) \\ \( f(-1)=\square \) \\ \( f(0)=\square \) \\ \( f(1)=\square \) \\ \( f(2)=\square \) \\ \( f(3)=\square \)\end{tabular}

8. Gegeben sind die Funktionen \( f_{a} \) mit \( f_{a}(x)=a x^{2}-3 a x+1, a \neq 0 \). Zeigen Sie: Die Gleichung der Tan- gente an den Graphen von \( f_{a} \) an der Stelle \( x=1 \) lautet \( y=-a x+1-a \). Ermitteln Sie, für welchen Wert von a diese Tangente durch den Koordinatenursprung geht.

\begin{tabular}{l|l|} \\ n & \( \begin{array}{l}\text { 6) ¿Cuál es el \% volumen de una } \\ \text { solución que resulta de agregar } 15 \mathrm{ml} \\ \text { de limón en } 185 \mathrm{ml} \text { de agua? }\end{array} \)\end{tabular}

\[ \frac{\text { original }- \text { New }}{\text { Oringinal }} \times 100 \] The cost of a soft drink from the vending machine was \( \$ 0.90 \) last year, but it is \( \$ 1 \) this year.