PLEASE HELP ASAP 20 POINTS THIS IS AN ALGEBRA 2 QUESTION PLEASE ONLY HELP IF SERIOUS

Answer:
A. 40°C B. -10°C per kilometer
Step-by-step explanation:
As the height increase, the temperature decreases.
Answer:
Step-by-step explanation:
At height of 0 km above the surface, temperature is 40°C.
:::::
At the height increases, the temperature decreases.
Rate of temperature decrease = 40°/(4 km) = 10°/km