Needs to get a cell phone and has to choose between two options, either buying a business
contract or using the pay as you use option. With the business contract, he
would pay a monthly subscription fee of R190 and R1,50 for each peak-call
minute. With the pay as you use option, you don't pay a monthly subscription,
but pay R2,50 for each peak-call minute.
Business Contract Pay-as-you-use
Free minutes
None
None
Monthly
subscription
R190 per month
None
Call rates
R1,50 per minute (or R2,50 per minute (or part
part thereo)
thereof)
2.1 Explain why the equation C=190+1,50t represents the total monthly cost (c)
in rands, for calls made using the business contract or a given amount of time (1)
in minutes
(2)
2.2 Write down a equation in the form: C= to represent Zamokwakhe's
total monthly cost (C ), in rand, for calls using the pre-paid option for given
amount of time (1),in minutes.
(3)
2.3 Calculate the cost of Zamokwakhe's calls on the pre-paid option if they add
up to 72 minutes and 12 seconds.​