Math

A plane was flying at an altitude of 30,000 feet when it began the descent toward the airport. The airplane descends at a rate of 850 feet per minute.
a. What is the function rule that describes this situation?
b. What is the altitude of the plane after it has descended for 8 minutes? Show
your work.
c. Usethefunctioninpartatodeterminehowlongittakesfortheplaneto
land if it descends at a continuous rate.
Prentice Hall Algebra 1 • Teaching Resources

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  1. a) new altitude x = 30,000 - 850.t
    b) x = 30,000 - 850.8
    x = 30,000 - 6,800
    x = 23,200 ft
    c) x = 30,000 - 850.t
    new altitude is 0 ft :
    850.t = 30,000
    t = 30,000 / 850
    t = 35.29 min

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    posted by Aranxta

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