8. A Canteen has fixed costs of $1500 per week. Meals cost $5 each and are sold at a fixed price of 19 each. (a) Write down the equation for total costs and plot its graph for Q = 0 to 160. (b) Calculate the cost of producing 100 meals per week. (c) Calculate the number of meals produced when total costs are $2300. (d) Write down the equation for the total revenue. (e) Calculate the number of meals sold when the total revenue is $3780. (f) Calculate the profit when 500 meals are sold per week