Answer
a. $312.4$ K, $102.68$ F
b. $248$ K, $-13$ F
c. $0$ K, $24598$ F
d. $1073$ K, $1470$ F
Work Step by Step
For converting temperature from Celsius to Kelvin we use following formula: $$K = C + 273.15\tag{1}$$ For converting temperature from Celsius to Fahrenheit we use following formula : $$F=\frac{9}{5}\cdot C + 32.\tag{2}$$
a) We substitute $C=39.2$ in equations $(1)$ and $(2)$: $$\begin{aligned}
K&=39.2+273.15=312.4\\
F&=\dfrac{9}{5}\cdot 39.2+32=102.6
\end{aligned}$$
b) We substitute $C=-25$ in equations $(1)$ and $(2)$: $$\begin{aligned}
K&=-25+273.15\approx 248\\
F&=\dfrac{9}{5}\cdot (-25)+32=-13
\end{aligned}$$
c) We substitute $C=-273$ in equations $(1)$ and $(2)$: $$\begin{aligned}
K&=-273+273.15\approx 0\\
F&=\dfrac{9}{5}\cdot (-273)+32\approx -459
\end{aligned}$$
d) We substitute $C=801$ in equations $(1)$ and $(2)$: $$\begin{aligned}
K&=801+273.15\approx 1073\\
F&=\dfrac{9}{5}\cdot (801)+32\approx1470
\end{aligned}$$
