Carrie currently pays $70 per month for her internet service-

She is planning to switch to the NBN service.

Write an equation for the total cost, T, of Carrie's current internet service over a period of n months. (Remember to use T and n, not x and y).)(A

B) For the NBN service, Carrie pays an installation fee of $1400, and then a monthly fee of $40.

Write an equation of the total cost ,T, of Carrie's new NBN internet service over n months.

.(Write your equation in terms of T=mn+c, DO NOT include spaces)

C) Using your answer in (b), fill in the table of values below:

24	12	6	1	n , months
				T,($), Total Cost

D) Graph your equation from a) and b) on the same set of axes and compare Carrie's total cost for the current internet provider and the total cost of her new NBN internet service.

Label each line, the axes-intercepts, and the point of intersection.

You will need to construct a graph on a separate piece of paper and upload it in the box at the bottom of the page. (6 marks)

E) Hence, using your graph from (d), determine how many months it will take for Carrie to 'break even' on her new service?

Round up your answer to the nearest whole number (if required). Think about why we must round up the answer.

-Number of months =