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Holiday education quiz, part 2

1. The equations below represent the relationship between the total cost, C, in dollars, to repair a computer and the amount of time, t, in hours, at two computer repair stores.

Compu-Fix: C = 10 + 15t

Data Repair: C = 30 + 12t

It will take between 1 and 5 hours to repair Maria’s computer. What are the smallest and largest possible amounts Maria could pay?
2. Nick wants to pave the rectangular patio of his new house. The patio has length 5.25 metres and width 3.00 metres. He needs 81 bricks per square metre.

Question: Calculate how many bricks Nick needs for the whole patio
3. Two stores are advertising specials on apples. 8 apples for $4.40 Store A 12 apples for $5.76 Store B Apples are sold individually. How much less would 30 apples cost at Store B than at Store A?
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