From the following questions, chose one question to answer. For full credit, you have to explain your answer clearly.

1.Without solving, explain what is wrong with the following mixture problem: How many gallons of 30% antifreeze should be added to 25 gallons of 40% antifreeze to obtain a solution of 45% antifreeze? Now go through an algebraic solution. What happens?

2. In your own words, explain the reason for using brackets [ ] VS using parentheses ( ) when you write the solution to an inequality in the interval notation or in graph.

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