Given that South Africa only saw a 3.3 percent inflation rate compared to Zimbabwe's 622 percent in 2020. What should happen to the South African rand's exchange rate with the Zimbabwean dollar throughout the course of 2020? Specify the hypothesis you have employed to account for this.

(c) The area A of a triangle is given by A=acsinB, where B is the angle between sides a and c. If a is increasing at 0.4 units/s, c is decreasing at 0.8 units/s and B is increasing at 0.2 units/s. find the rate of change of the area of the triangle, correct to 3 significant figures, when a is 3 units, c is 4 units and B is x/6 radians. (8 marks)