Can someone please help me understand ?

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A helicopter takes off from the roof of a building that is 200 feet above the ground. The altitude of the helicopter increases by 150 feet each minute.
(a) Use a formula to express the altitude of a helicopter as a function of time. (Let t be the time in minutes since takeoff and A the altitude in feet.)
A = 
 

(b) Express using functional notation the altitude of the helicopter 270 seconds after takeoff.
A )

Calculate that value. (Round your answer to the nearest foot.)

 ft

Sep 10th, 2015

Thank you for the opportunity to help you with your question!


a)

A = 200 + 150 t...........................ANSWER


b) 

270 seconds = 4.5 minutes

so.

(b) Express using functional notation the altitude of the helicopter 270 seconds after takeoff.
A( 4.5)

A ( 4.5).....................................ANSWER



Calculate that value. (Round your answer to the nearest foot.)

A ( 4.5) = 200 + 150 *4.5

             =  875 ft........................................ANSWER



Please let me know if you need any clarification. I'm always happy to answer your questions.....thank you
Sep 10th, 2015

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