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Year 12 Maths Standard 1 (2027) Algebraic relationships

Interpreting the Point of Intersection

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Question 1
198940

Two phone plans charge for the data \(n\) (GB) used in a month. Plan A costs \(\$10\) plus \(\$2\) per GB; Plan B costs \(\$4\) per GB. The graph shows the cost \(C\) (dollars) of each plan. After how many GB do the two plans cost the same?

\(n\)
\(C\)
2 4 6 8 10 20 30 40 Plan A Plan B
5
 \(\text{ GB}\) 1 mark

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