The cost and revenue functions of a company are given by the equation C(x)=30x+1000 and R(x)=70x-1000, respectively.
In these equations, x is the number of items produced and sold and C(x) and R(x) are in rands.
8.1 Determine the profit function P(x).
8.2 What is the break-even level?
8.3 Draw a neat plot of each function indicating functions C and R on the same set of axes.