High School

What is the cost, in dollars, to produce \( x \) designer dog leashes if the cost function is given by [tex] c(x) = 9x^6 [/tex], and the revenue function is given by [tex] r(x) = -2x^2 + 57x [/tex]?

A. [tex] 9x^6 - 57x [/tex]

B. [tex] 9x^6 + 2x^2 [/tex]

C. [tex] 57x - 9x^6 [/tex]

D. [tex] 2x^2 - 57x [/tex]