and develop a cost function which describes the behaviour of the laundering costs.

The university administration has assembled the data for a twelve$-$month period pertaining to the monthly total

custs of providing the scavice and the concsponding number of students who used the lamelering facilitics each

month. You were recently taught how to use the Excel graphing tool and a member of the team successfully

generated the scattergram given below from the data set provided.

ANGLA RUSTON UNIVERSITY SCATTER DIAGRAM

The other team members are now tasked to use the graph to provide the administrators with a detailed response

to the following questions:

a$)$ What is another name for the "line of best fit" in Excel? What is the purpose of this line? $(2$ marks$)$

b$)$ Using the "line of best fit", determine Angla Ruston University's fixed cost per month and the variable cost

per student. $($Use $0$ & $2,500$ students.$)$

c$)$ Based on the scatter gram, what is the equation of the total mixed cost function?

d$)$ In August of the upcoming academic year, the university expects the number of students using the

Laundromat to increase to $3,400.$ What is the expected total laundering cost for August? $(2$ marks$)$