Convert the following to Verbal form: activity \( 100-9 x \) b. \( 7 a+43 \) c. \( x \) \( 4+5 \) d. \( y(12-9) \)

\( \left. \begin{array} { c } { A = \{ x : x \in R , x \geq - 2 \} } \\ { B = \{ x : x \in R , x \leq 1 \} } \\ { C = \{ x : x \in R , 3 \leq x \leq 9 \} } \\ { A \cup ( B \cup C ) } \end{array} \right. \)

(b) Solve the following systems of linear equations using Jacobi iteration method. \[ \begin{array}{l}\text { (8 marks } \\ 10.27 x_{1}-1.23 x_{2}+0.67 x_{3}=4.27 \\ 2.39 x_{1}-12.65 x_{2}+1.13 x_{3}=1.26 \\ 1.79 x_{1}+3.61 x_{2}+15.11 x_{3}=1.27\end{array} \]

Aufgabe 1 Berechne die Funktionswerte der folgenden Funktionsgleichungen für die Stellen \( 1 ;-2 \) und \( \frac{5}{6} \) \( \begin{array}{l}\text { a) } f(x)=-\frac{4}{3} x \\ \text { b) } g(x)=2 x+4 \\ \text { c) } h(x)=0,3 x-1,4\end{array} \)

ii. \( \sqrt{12}-2 \sqrt{3} \)

Use the FOIL method to expand: \( (2x + 3)(x + 5) \)