The revenue, in thousands of dollars, that a company earns selling lawnmowers can be modeled by r(x)=90x-x^2 and the company's total profit, in thousands of dollars, after selling x lawnmowers can be modeled by p(x)= -x^2+30x-200 . which function represents the company's cost, in thousands of dollars, for producing lawnmowers? (recall that profit equals revenue minus cost.) a) c(x)= -60x^2-200 b) c(x)= 60x^2+200 c) c(x)=2x+60x^2+200 d) c(x)= -2x-60x^2-200