The cost for a company to produce x smartphones can be modeled by c(x)= 2x+35 and the company's total profit after selling x smartphones can be modeled by p(x)= -x^2+120x-435. which function below represents the company's revenue for selling smartphones? ( recall that profit equals revenue minus cost) a) r(x)= -x^2+122x-400 b) r(x)= -x^2+118x-470 c) r(x)= -x^2+122x-470 d) r(x)= -x^2+122x+400