An airplane 30,000 feet above the ground begins descending at the rate of 2000 feet per minute. a. Write an equation to represent the airplane's height above the ground in feet as a function of time in minutes.

b. How many minutes will it take for the plane to reach a height of 18,000 feet above the ground?

Organisms that live in the alpine and taiga biomes have developed unique adaptations that aid in their survival. the douglas-fir is a conifer tree that grows in the taiga biome. it has an average height of about 70 feet, and its wood is an important source of lumber.

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.