60 POINTS

The revenue R (in thousands dollars) for a business is modeled by the equation [tex]R=x^3-6x^2+x+75[/tex] , where x is the number of years since 2000. The cost C (in thousands dollars) for this business is modeled by the equation [tex]C=x^2-70x[/tex] .

Which equation represents the profit, P, for this business?

[tex]P=x^3-5x^2+71x+75[/tex]

[tex]P=-6x^2+71x+75 [/tex]

[tex]P=x^3-7x^2+71x+75[/tex]

[tex]P=x^3-5x^2+69x+75[/tex]