Write an equation describing the relation- ship between the two variables in each of the following problems and graph the relationship.
(a) Sun & Ski Travel pays for radio advertising at the fixed rate of $1000 per week plus $75 per announcement during the week.
(b) The Kirkland Company markets two products. Each unit of Product A requires five units of labour, while each unit of Product B requires two units of labour. Two hundred units of labour are available per time period.