## Precalculus (6th Edition)

$\approx 463.89°C$
The formula to convert from F to C is: $C = \frac{5}{9}(F-32)$ Lets replace F by 867: $C = \frac{5}{9}(867-32) = \frac{5}{9}\times835 = \frac{4175}{9} \approx 463.89$ $\approx 463.89°C$