In Charlottesville, VA there are 2 internet service providers. C-ville OnLine's monthly plan costs $6 for the first 20 hours on line per month, and $1 per each additional hour, with a monthly maximum of $66 per month. The other company, MS Albemarle, charges a monthly connection fee of $2, plus 50 cents for each additional hour on line with no maximum. Determine the conditions under which each plan is preferable.

The Mama Mia Sauce Company wants to package their famous sauce in 980 cc cans. They would like to minimize the amount of material used to make the cans. Your job as productions manager for Mama Mia is to determine what can dimensions, radius, and height, will produce a can which will hold the desired amount of sauce yet use the least amount of material.