$7.$ Exercise $10\mathrm{.}9$

Jordan Enterprises has estimated the contribution margin P$$MCPP$$MCP$$for its Air Express model of basketball shoes to be $40$ percent. Based on market research and past experience, Jordan estimates the following relationship between the sales for Air Express and advertising$/$promotional outlays:

Advertising$/$Promotional Outlays

Sales Revenue

$($$$)$

$($$$)$

$500,0004,000,000600,0004,500,000700,0004,900,000800,0005,200,000900,0005,450,0001,000,0005,600,000$

What is the marginal revenue from an additional dollar spent on advertising if the firm is currently spending $$1,000,000$ on advertising?