The cost of dance lessons is $12 for 1 lesson, $22 for 2 lessons, and $32 for 3 lessons. Use a graph to determine whether the cost is proportional to the number of lessons. Explain your reasoning.
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COST of 22 lessons are (go and ask your teacher
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10 because you make a graph and subtract 22-12=10 and 32-22= 10. They all equal ten. So the answer is proportional.
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