Question

An airplane 28,000 feet above ground begins descending at a constant rate of 2,000 feet per minute. Which equation gives the height, h, of the airplane after m minutes?

Answer 1

so it's 28000 feet above ground, to start with, then every passing minute "m" is dropping by 2000 feet, let's see,

1 minute.........................28000 - 2000(1)

2 minutes......................28000 - 2000(2)

3 minutes......................28000 - 2000(3)

4 minutes......................28000 - 2000(4)

m minutes.....................28000 - 2000(m)

h = 28000 - 2000m.