6.3. No additional comments aside from (1) you know how to do the algebra and (2) you know how to plot \(f(x)\) against \(x\).

6.4. No additional comments aside from (1) you know how to do the algebra and (2) you know how to plot \(f(x)\) against \(x\).

6.7. It takes 0.5 hr. to process/handle the food item, it will take \(1/V\) hr. encounter a food item, and there will be a total of \[\frac{12}{0.5 + \frac{1}{V}}\] in a 12-hr. period. This can be rewritten, after multiplying the numerator and denominator by \(V\), as \[\frac{12V}{1 + 0.5V}\] Please just make the graph.

6.10. No additional comments.

6.12. No additional comments.

6.13. No additional comments.