# Maths Literacy

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Education

Published on April 27, 2014

Author: 16440730

Source: slideshare.net

Research Assignment You now need to discover how much electricity your household uses or how many minutes your household spends on the telephone. Therefore you need to do some research. Steps: 1. Choose between telephone or electricity. 2. Record the tariffs/amounts billed for each day for 2 weeks. 3. Do the calculations.

Do the following calculations  At the end of the 2 weeks, you need to: ○ Identify what measuring units was used to calculate the usage. ○ Calculate the average amount for the 2 weeks. ○ Estimate what the yearly average would be. ○ Determine the total cost of usage for the 2 weeks. ○ Draw a graph of the usage (days on the x axis and number of minutes or kWh on the y axis). ○ Write down a few observations that you can conclude from your graph.

Example of a telephone graph 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Cost(R) Days Graph indicating telephone tariffs over a period of 2 weeks

Example of an electricity graph 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ElectricityUsage(Kwh) Day Graph Showing 2 weeks of Electricity Usage during April in a Household of 4

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