# Functions: Cost, Revenue, and Profit

A biscuit factory has the following fixed and variable manufacturing costs:

- daily fixed costs of RM500.

- costs 80 cents to produce each bag of biscuits.

In addition, the revenue per unit sold is:

- A bag of biscuits sells for RM 1.80.

Given that x represents the number of bags of biscuits sold,

(a) Find

(i) Cost function, C(x)

C(x) =

(ii) Revenue function, R(x)

(iii) Profit function, P(x)

(b) Calculate the daily profit if the factory sells 1200 bags of biscuits daily.