Question

PLEASE HELP!

An airplane flying at an altitude of 18,000 feet has just begun its descent, and it will descend at a rate of 450 feet per minute.

Which of these equations represents the airplane's altitude, y, in feet after it has been descending for x minutes?


A. y equals negative 450 x minus 18,000

B. y equals negative 450 x plus 18,000

C. y equals 450 x minus 18,000

D. y equals 450 x plus 18,000

Answer 1

Choice B

y = -450x +18,000

Explanation:

18,000 = b

descent rate = 450 = m

x = minutes

Answer 2

B. Is correct
Y= -450x + 18,000 or in other words y= 18,000 - 450x