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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?


Sagot :

Mlcparra16id
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

[tex]a(t)=210-15t \\ a(5.5)=210-15(5.5)=210-82.5=127.5[/tex]
Jers15id
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 =)