The underground temperature, a basis for geothermal energy sources can be approximated using the
function T(d) = 35d + 20, where d is the distance from the land surface in km. Find the underground
temperature 3,500 m below the surface.
A. 136.5
B. 138.5
C. 140.5
D. 142.5
Answers & Comments
Answer:
C
Step-by-step explanation:
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