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Required information

Problem $5-30($Algo$)$ Graphing; Incremental Analysis; Operating Leverage $[$LO$5-2,$ LO$5-4,$ LO$5-5,$ LO$5-6,$ L$05-8]$

$[$The following information applies to the questions displayed below.$]$

Angie Silva has recently opened The Sandal Shop in Brisbane, Australia, a store that specializes in fashionable sandals. In time, she hopes to open a chain of sandal shops. As a first step, she has gathered the following data for her new store:

$\backslash$table$[[$Sales price per pair of sandals,$$20$