Elasmoak 1.
Exercise C Problem solving
Aisha wants a cheap landline telephone call business. She has approached two landline
telephone companies that charge as follows:
CallaFriend Company charges a monthly subscription fee of R200 and they provide 500 free
minutes. They also charge RI for every minute above 500 minutes.
Call300 charges a monthly subscription fee of R300 and they provide 300 free minutes.
Thereafter you pay R0,50 for every minute above 300 minutes.
(a) Write a statement that can be used to calculate the monthly payment for:
(0) CallaFriend
(11) Call300
(b) Use your expressions in (a) to calculate the values of P, Q and R in the table below.
Number of minutes used
100
300
500
P
Monthly payment (rand) Callafriend
200
200
200
700
Call300
300
300
o
R
(C)
Draw a graph showing the relationship between the number of minutes used and the​