Convert 63°F to degrees Celsius. If necessary, round your answer to the nearest tenth of a degree. Here are the formulas. IN (F-32) cf 9 F- 0+32 5 63 "F II c

200

Step-by-step explanation:

Given that C(x) = 0.1 - 40x +9569,

complete the square, then C(x) = 0.1* ( - 400x) +9569

                                                    = 0.1 * ( - 400x + ) +9569 -

                                                    = 0.1 * (x - 200)^2 - 30431

so the answer is 200 machines