5 I have 12 oranges. How many people can I give \( \frac{2}{3} \) of an orange to? \( \underline{6} \) Andrew uses \( \frac{2}{5} \) of a bag of fertiliser each week. How long will one bag of fertiliser last? \( \underline{7} \) Which is the better value: \( \frac{3}{4} \mathrm{~kg} \) of soap powder for \( \$ 9 \) or \( \frac{2}{3} \mathrm{~kg} \) of soap powder for \( \$ 8 \) ?

1. Elabore un ejemplo para entender metor el concepto de las cinco Fuerzas de Michael Porter.

e. \( (x+6)^{2} \)

3. Match the equations on the left to their correct solutions on the right using your knowledge of solving one-step equations. \( \begin{array}{ll}\text { 1. } 84-x=108 & \text { a. } x=-24 \\ \text { - 2. } 33+x=-66 & \text { b. } x=56 \\ \text { - 3. }-36=12-x & \text { c. } x=48 \\ \text { 4. } 42=-14+x & \text { d. } x=-99\end{array} \)

Vereinfache die Wurzelterme mithilfe der Potenzgesetze: \( \begin{array}{lll}\text { a) } \sqrt{\sqrt[3]{a}} & \text { b) } \sqrt[3]{\sqrt[4]{a}} & \text { c) } \sqrt[3]{a^{2}} \cdot \sqrt[3]{a^{5}} \\ \text { e) } \sqrt{\sqrt{\sqrt{a}}} & \text { f) } \sqrt{a \sqrt{a \sqrt{a}}} & \text { g) } \sqrt[3]{\frac{1}{\sqrt{a}}}\end{array} \)

2. Considere o desenvolvimento do binómio seguinte: \( \left(\frac{2}{x}+\sqrt{x}\right)^{20} \), com \( x \geq 0 \). Determine o termo cuja parte literal é \( x^{7} \).