What is the product of the following numbers? Use a scientific calculator to find the answer. \( 4.92 \times 10^{3} \times 2.17 \times 10^{5} \) A. \( 5.7 \times 10^{14} \) B. \( 1.07 \times 10^{9} \) C. \( 1.07 \times 10^{15} \) D. \( 8.1 \times 10^{12} \)

Write each of the following percentages in decimal form. \( \begin{array}{ll}\text { (a) } 0.16=16 \% & \text { (b) } 0.153= \\ \text { (c) } 0.085=9 \% & \text { (d) } 0.025= \\ 1.35= & \text { (f) } 1.125=\end{array} \)

7. If the terms 4,6 and 18 are in proportion. Find the third proportional.

Format Painter Cliphasd cample 1 box of chocolate chip cookies has 12 cookies inside, and a box of peanut butter cookies holds 6 sokies. A group of students share the cookies in each box. If each student gets the same combination f chocolate chip cookies and peanut butter cookies, find the highest number of students there could e in the group. (use a model)

Driftskostnaderna \( K \) kr för en elektrisk såg med effekten \( P \) kilowatt kan skrivas \( K=1,4 \cdot P \cdot t \) om den är inkopplad it timmar. Beräkna driftskostnaderna för en såg med effekten \( 0,6 \mathrm{~kW} \) som är inkopplad 45 minuter.

1.2. Between which two consecutive integers does \( \sqrt{138} \) lie? 1.3.1. Rewrite 92 and 146 as products of their prime factors. 1.3.2. Write down the LCM and HCF of 92 and 146 . 1.3.3. Divide 240 g in the ratio \( 5: 3: 4 \). 1.4. Thoriso can either walk to \( \mathrm{school} \mathrm{at} 5 \mathrm{~km} / \mathrm{h} \) or ride her bicycle at \( 15 \mathrm{~km} / \mathrm{h} \). If she rides her bicycle, it takes her 10 minutes to get to school. 1.4.1. How long will it take her if she walks to school? 1.4.2. Is this direct or indirect proportion? Give a reason for your answer. (2) 1.5. The price of petrol is increased from \( R 12,58 \) per litre to \( R 13,28 \) per lite.