Spreadsheet Exercises

$2-48.$Refer to Example $2-4.$If your focus was on reducing expenses, would it be better to reduce the fixed cost $($B$1)$or variable cost $($B$2)$component$?$ What is the effect of a $+-10\%$change in both of these factors? $(2\mathrm{.}2)$

$2-49.$Refer to Example $2-7.$If the average inside temperature of this house in Virginia is increased