3. Write down the equation used to determine the unit cost of a product. 4. In a manufacturing process, when 1000 units are produced, R 10000 prime costs (assume all are variable costs) are incurred, while the manufacturing overheads amount to R5 000 (assume all are fixed costs). a. Calculate the total cost of production and the unit cost of the product. b. Now calculate the total cost of production and the unit cost of the product, if the number of units produced increases to 2000 units.

2. Найдите все неразвернутые углы, образованные при пересечении двух прямых, \( k \) ссли один из них на \( 81^{\circ} \) больше другого.

Explain the evidence presented in the film for your answer in the previous question. Males only came to the loudspeaker when the song of their own species was being played. The type of song used more often during the breeding season was also the song sung by the most abundant species.

d) \( \left(-\frac{4}{9}\right)\left(-\frac{7}{3}\right)=\square \square \square \) е) \( \left(\frac{9}{15}\right)\left(-\frac{5}{9}\right)=\square \square \)

15. Problem: Evaluate \( \int\left(x^{2}+\frac{1}{x^{2}}\right) d x \) Solution: Let \( \mathrm{I}=\int\left(x^{2}+\frac{1}{x^{2}}\right) d x \)

(6 marks) Question 3.2: Explain how capacitors are used in electronic circuits, including one practical example. (8 marks) Question 3.3: