Please help The production costs, C, in thousands of dollars, for an
energy drink company to manufacture cans of energy
drink is given by the model C(x) = 50 + 3.8x – 0.0038x^2,
where x is the number of cans of energy drinks produced
in one day, in thousands. The company wants to keep its
production cost at or below $781.12.
(I KNOW WHAT THE ANSWER IS, I JUST WANT TO KNOW HOW THE WORK IS DONE)