When the equation

A company has twenty managers, two hundred technicians, fifty customer service providers and forty delivery van drivers. The company wishes to determine the opinion of the employees. As a starting point in the population, a delivery van driver is randomly selected. Then subsequently every third employee is selected. This type of sampling technique is called

The cost (in rand) of ordering and storing units of a product is given by the function

Choose the correct statement.

A factory quality manager investigates the number of defective items produced each day. He collects the following data for days:

Consider the linear function:

.

Determine the - and -intercepts.

Which ONE of the following equations has a solution of ?

The Quickprint Publishing Company plans to publish a vegetarian cookbook. The cost (in rand) to produce books is given by the function

                                        .

The revenue (in rand) from selling these cookbooks is given by the function

                                        .

The marginal profit function is

The interest earned on an investment of made for nine months at an interest rate of per year, compounded monthly, is

You plan to make equal quarterly deposits at the end of every three months into your retirement fund. The fund earns interest per year, compounded quarterly. You wish to have accumulated at the end of years. The size of each of the payments has to be

The width of a rectangular tank is . Its height is its width and its length is four times its height. The volume of the tank (in litres) is