Question 1191628
the equation will be:


y = a * x^2 + b * x - c


a * x^2 represents the product of computing components (a) and the square of the number of devices (x^2)


b * x represents the product of labour (b) and the number of devices (x).


you find the two products and add them together and then you subtract the savings on reusable material (c).


let me know if you have any questions.
theo