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We are introdcuing inequalities using real world problems however, if we present a problem such as “A student can carry up to 1/5 of their weight in their back pack.” Our concern is the inequality w is less than or equal to 1/5 reflects all values less than 1/5 including values less than zero. Is this where we should introduce compound inequalities within our discussion of what numbers satisfy the description? Thanks for your help.
Great question. I asked the same thing! Here’s what Dr. McCallum said:
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