P$22\mathrm{.}5($L$03,4,5),$ E Mary Willis is the advertising manager for Bargain Shoe Store. She is currently

working on a major promotional campaign. Her ideas include the installation of a new lighting system

and increased display space that will add $$29,000$ in fixed costs to the $$270,000$ currently spent. In addi$-$

tion, Mary is proposing that a $5\%$ price decrease $($ $$40$ to $$38)$ will produce a $25\%$ increase in sales volume

to $25,000$