Question 1204947
It is 76°F at the 5,500-foot level of a mountain and 41°F at the 9,000-foot level of the mountain.
------
The altitude change is 3500 feet and the temperature change is -35 degs.
---> -1 deg/100 feet
==============

Use the elevation as the e-value. For example, at the elevation 7000 feet, use e=7000.

a. Write an equation to find the temperature (T) at an elevation (e) on the mountain.
   Round decimals to 4 places.
{{{T = 76 - (e-3500)/100}}} degs F
=====

b. Using your equation from part (a), predict the temperature at an elevation of 16,200 feet.
{{{T = 76 - (16200 - 3500)/100}}}
T = -51 degs F
========================================
This assumes the relation between altitude and temp is linear, but it is not.