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Mrs.Roberts charges 25 for a basic cake that serves 12 people. If you want a large cake, it costs an additional $1.25 per serving. Write equation for the total cost or a cake, where y represents total cost and x represents the number of additional servings. How much would a cake that serves 20 people cost?

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amna04352

Answer:

y = 25 (for x less than/equal to 12)

y = 25 + 1.25(x - 12) for x > 12

For x = 20

y = 25 + 1.25(20 - 12)

y = 25 + 10

y = $35

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