QUESTION 2 Calton High school is considering buying a cell phone for the school to use when telkom
lines are down. The school is considering two cell phone options; a prepaid deal or a
contract deal.
The Vodacom offers for the two deals are shown in ANNEXURE A
TABLE 2 below shows the cost of the two offers in minutes.
TABLE 2: TOTAL COST OF MINUTES FOR BOTH OFFERS
400
600
300
200
0
100
Minutes
450
600
900
0
150
Prepaid deal cost
B
300
Contract deal cost
300
300
400 500
(Adapted from www. vodacom. co. za/shopping/products
Use ANNEXURE A and TABLE 2 to answer the questions that follow.
(2)
2.1
How many free minutes does the contract deal include?
2.2
Identify the dependent and independent variables in TABLE 2.
2.3
The school can use the formula below to calculate the total cost for
using the prepaid option.
Total Cost = R1,50 X number of minutes
Use the above formula to calculate A, the cost of 200 minutes for
the prepaid option.
2.4
Write down the formula the school can use to calculate the total cost
for the contract deal, in the form:​

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