A hot air balloon descends to the ground. The function a(t) = 210 – 15t can be used to describe the altitude of the balloon as it approaches the ground. The time is in minutes.
What does t represent?

What does a(t) represent?

What information will a(5.5) give?

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Answers

2015-05-15T21:01:16+08:00

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In a function we usually have f(x) where x is a certain value and f(x) is equal to another value.

t represents the time in minutes, while a(t) represents the altitude or height of the balloon at a certain time of t minutes and is expressed as 210-15t

a(t)=210-15t \\ a(5.5)=210-15(5.5)=210-82.5=127.5
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2015-05-16T11:09:42+08:00

This Is a Certified Answer

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Answers to the question:
1.t is a variable that represents time
2.a(t) is a function that represents the altitude left before approaching ground
3.the information a(5.5) give is:
a(t)=210-15t
a(5.5)=210-15(5.5)
a(5.5)=210-82.5
a(5.5)=127.5

Hope this helps =)
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